Corner aluminum - one of the varieties of rolled metal produced by modern industry. The characteristics that the corner made of aluminum has determine the high long-term demand for this product used for a variety of purposes.

Characteristics of aluminum corners

Any metal corner is a product whose profile cross section resembles the letter “L”. An aluminum corner can be called equal-shelf if the width of both of its shelves is the same, or unequal-shelf if its shelves have different widths. The corner at the base of such a profile, as well as the corners at the edges of its shelves, can be absolutely straight or rounded (this depends on the technology with which it is made). The main method of producing aluminum corner is bending an aluminum strip at a right angle, for which special equipment is used.

The characteristics of the final product are influenced by chemical composition and the properties of the material from which it is made, as well as the technology of its production. Depending on the purpose of the aluminum corner, the following materials can be used for its production:

• A0, AD, AD31, AMg, AMts, D16 (for general purpose profiles);
• AD0, AD00, AD31, AD31E, A7, A5E (for profiles used in the manufacture of electrical products).

The geometric parameters of equal-shelf and unequal-shelf corners can vary within the following limits:

• shelf width: equal-shelf products - 10-200 mm, unequal-shelf products - 6-265 mm;
• wall thickness: equal-shelf - 1-43 mm, unequal-shelf - 1-66 mm.

Aluminum corner profiles may not be subjected to heat treatment, but they can be annealed (then they will become soft) and hardened. Such products are additionally processed in other ways, namely:

• cover their surface with paints and varnishes (Zhl);
• electrophoresis is used to apply a protective layer (Je) on their surface;
• apply electrolytic processing - anodizing (An);
• a polymer coating is applied to their surface by the powder method (P);
• a complex two-layer substance (K) is used to protect their surface.

The dimensions of the aluminum corner can be found by its marking, which can indicate not only the width of the shelves, but also the thickness of the metal from which it is made. For example, marking 50x50 means that this is an equal-shelf corner, the width of each shelf of which corresponds to 50 mm, and the designation 50x30x2 indicates that this is a product with shelves of different widths (50 and 30 mm, respectively), made of metal 2 mm thick.

In accordance with the provisions of GOST 8617-81, an aluminum profile in the form of a corner can be supplied to customers with products of measured, random length and length, which is a multiple of the measured length.

Varieties of aluminum corner are products with perforated and profiled shelves. A feature of a perforated profile is that holes are specially made in its shelves - perforation. Profiled products are corners, on the edges of the shelves of which special folds are made. These are not decorative elements - they are designed so that the product can perform certain functions.

You can get acquainted with the GOST requirements for aluminum corners by downloading the document in pdf format from the link below.

Benefits of using

Aluminum is a more ductile material than steel, so it is much easier to manufacture products from it with a specific cross-sectional profile. Corners made of this material have the following characteristics:

1. exceptionally high resistance to corrosion (hence - successful and long-term operation in conditions of high humidity and exposure to aggressive environments);
2. optimal combination low weight, sufficiently high strength and rigidity, which allows such products to withstand significant loads;
3. the ability to respond well to thermal and mechanical processing, to weld;
4. ease of installation;
5. the ability to take the desired configuration due to the high ductility of aluminum;
6. high thermal and electrical conductivity;
7. the ability to withstand without deformation not only low and high temperatures, but also a sharp change temperature regime(from -80 to +1000 Celsius);
8. ease of care (dirt does not accumulate on the smooth surface of aluminum);
9. exceptionally high decorative effect;
10. fire safety;
11. environmental cleanliness;
12. the possibility of being recycled, which is carried out at low financial costs;
13. low price (aluminum is a common and, accordingly, inexpensive non-ferrous metal, and the costs incurred for the purchase of aluminum corners are fully offset by the worthy characteristics of this product).

High corrosion resistance (one of the main advantages of aluminum corner profiles) is explained by the fact that a protective oxide film is formed on the surface of aluminum when it interacts with oxygen. Despite the fact that such a film is characterized by excellent protective properties, it is easily damaged by mechanical action on the metal, since its thickness is small. To provide aluminum corners with even more reliable protection, additional coatings are applied to their surface.

A reliable protective coating of the required thickness makes it possible to obtain such a technological operation as anodizing. The so-called anodized aluminum is a metal on the surface of which a high-strength oxide film is specially formed, which can successfully withstand even significant mechanical stress.

Such a film, in addition, improves the insulating characteristics of aluminum, so that products made from it do not accumulate static electricity (this is very important quality for large structures).

Corner aluminum profiles, when compared with similar products from other metals, are characterized by a number of significant advantages. Compared to copper, such corners are significantly lighter and more affordable. Profiles made of ordinary steel, although they are several times cheaper than aluminum, have more weight and are subject to corrosion processes. Just like aluminum, stainless steel corners resist corrosion well, but the prices for such products are approximately the same, and steel weighs much more.

Classification

Corners made of aluminum, the assortment of which is determined by the requirements of the relevant normative document, widely used:

• for the manufacture of structures that must simultaneously be distinguished by high strength and low weight;
• in the production of sea and river vessels;
• in the automotive industry;
• for the construction of enclosing structures, which, in addition to strength and stability, must have good decorative characteristics.

Due to the ease of processing, corner aluminum profiles are used to produce supports for various purposes, brackets, as well as other structural elements that must be light and at the same time strong. It is also convenient that the strength of products made from such corners can be increased by subjecting them to heat treatment. It is possible to significantly increase the resistance of such structures to the effects of aggressive environments with the help of such technological operation like anodizing.

Aluminum corners, depending on the scope, production technology and main characteristics, are divided into the following categories.

equal-shelf

These are corner aluminum profiles that differ in the same width of the shelves. Such corners are used for the manufacture of lightweight structures, in the manufacture of furniture, as a facing material, as well as for solving many other problems.

unequal

A distinctive feature of such products is that they are able to maintain their profile when bending. For this reason, such aluminum profiles are ideal for the manufacture of structures with complex geometric shapes.

profiled

These products are used mainly as docking elements of structures for various purposes.

perforated

Corners, on the shelves of which perforation is made, are used for facing various types of surfaces. The corners of structures lined with such profiles not only have the correct geometric shape, but are also reliably protected from mechanical damage.

anodized

Due to the special coating formed on their surface, such aluminum products are distinguished by high corrosion resistance, exceptional durability, and electrical insulating properties. corners of this type are used to create structures that will be operated in the open air, in conditions of aggressive environmental influences.

Decorative

These are corners that are attractive appearance. They are actively used in the production of furniture and furniture fittings, other interior items, for fixing shelves, mirrors and glass, and for solving other decorative tasks.

Main Applications

The most common areas of application for aluminum corners are:

• construction of light building structures: trade pavilions, kiosks, sheds, etc.;
• creation of pre-fabricated structures that do not experience serious loads during operation;
• construction of office and interior partitions;
• performance of repair and finishing works;
• glazing and insulation of loggias and balconies, finishing of facades of buildings and other surfaces;
• installation of light-transmitting walls and roofs;
• production advertising structures, information stands, signboards and shop windows;
• equipment of exhibition halls, decoration of premises for any other purpose;
• manufacture of windows, doors, furniture and household appliances;
• decorative finishing of door and window openings;
• production of docking parts, guides, protective elements.

State standard USSR GOST 18591-91

"SPECIAL ALUMINUM PROFILES. RANGE. TECHNICAL REQUIREMENTS"

Aluminum special. Range of sizes

Instead of GOST V 18591-73

This standard applies to aluminum profiles and aluminum alloys grades AD1, D1, AM4, manufactured by pressing followed by drawing or cold extrusion.

All requirements of the standard are mandatory.

1. Classification

Profiles are divided into:

form of manufacture (shape and dimensions correspond to a specific profile number);

material condition:

hardened and naturally aged from aluminum alloys of grades D1 and AM4-T;

hard-worked from aluminum grade AD1 and aluminum alloy grade D1-N.

2. Assortment

2.1. Profile numbers, basic dimensions, parameters must correspond to those given in table. one.

2.2. The dimensions of profiles N 3-9 and their parameters must correspond to the table. 2.

table 2

Dimensions, mm

Profile number					R, no more	Sectional area of ​​the profile, cm2	Weight of 1 m profile, kg

2.3. The dimensions of profiles N 10-12 and their parameters must correspond to the table. 3.

Table 3

Dimensions, mm

Profile number						Sectional area of ​​the profile, cm2		Weight of 1m profile, kg

2.4. When calculating the mass of 1 m of the profile, the cross-sectional area is taken at the nominal value, and the density of the material is taken equal to:

aluminum brand AD1 - 2700 kg/m3;

aluminum alloy grades D1 and AM4 - 2800 kg/m3.

2.5. Unspecified corner radii of profiles should be no more than 0.5 mm.

2.6. The local curvature of the profiles should not exceed 5 mm per 1 m of length.

It is allowed, by agreement of the parties, to produce profiles with a local curvature of not more than 2 mm per 1 m of length.

2.7. The twisting of the profiles around the longitudinal axis should not exceed 5° per 1 m of length.

It is allowed, by agreement of the parties, to produce profiles with a twisting angle of not more than 2 ° per 1 m of length.

2.8. Profiles pressed with subsequent drawing are made in random lengths from 1.5 to 3 m.

Shortened profiles with a length of at least 0.7 m are allowed in the batch in the amount of 10% of the batch weight.

2.9. The length of profiles produced by cold extrusion is set by agreement of the parties.

2.10. Profiles must be cut at right angles. The oblique cut should not exceed 3° and take the profiles beyond the delivery length.

3. Technical requirements

3.1. Profiles must be made:

N 1 - made of aluminum grade AD1 according to GOST 4784;

N 2-17 - made of aluminum alloy grade D1 according to GOST 4784;

N 18 - from aluminum alloy AM4, the chemical composition of which must correspond to that indicated in table. four.

Table 4

3.2. Profiles N 1, 3, 5, 7, 13, 14, 16, 17 are made by cold extrusion (x / w).

It is allowed, by agreement of the parties, to manufacture these profiles by pressing followed by drawing.

Profiles N 2, 4, 6-12, 15, 18 are made by pressing followed by drawing.

3.3. Mechanical properties of profiles:

the temporary resistance of profiles manufactured by pressing with subsequent drawing must correspond to that indicated in table. 5;

temporary resistance of profiles produced by cold extrusion is established by agreement of the parties;

relative elongation and yield strength are established by agreement of the parties.

Table 5

Note. The tensile strength indicators determined on samples cut from profiles that have been re-hardened at the consumer enterprise can be 19.6 MPa (2 kgf / mm) less than the corresponding indicators.

Symbol examples:

Profile made of alloy grade D1, hardened and naturally aged, N 13, obtained by cold extrusion:

Profile D1-T-13-x/v - 18591-91

The same, from aluminum grade AD1, hard-worked, N 1, obtained by cold extrusion:

Profile AD1-N-1-x/v - 18591-91

The same, from an alloy of the AM4 brand, hardened and naturally aged, N 18, obtained by pressing followed by drawing:

Profile AM4-T-18 18591-91

3.4. Contamination, cracks, delaminations, non-metallic inclusions, spots of corrosive origin are not allowed on the surface of the profiles.

3.5. On the outer surface of the profiles are allowed:

captivity, nicks, dents, risks, pinholes, if the depth of their occurrence does not take the profile beyond the maximum deviations in size.

The total length of the sections of the profile with the indicated defects should not exceed 15% of the entire length of the profile:

nicks, shells, scratches, risks, traces of editing, with a depth that leads beyond the limit deviations, if the length of the profile with the indicated defects does not exceed 10 mm and the number of such segments will be no more than two per 1 m of length;

tint colors, dark and light spots and stripes, traces of cleaning defects with an abrasive wheel in the form of longitudinal and circular scratches with a depth of not more than 0.1 mm.

3.6. The profile roughness parameter should not exceed Rz 100 according to GOST 2789.

At the request of the consumer enterprise, the profiles are supplied with a surface roughness of Ra 3, 2.

3.7. The macrostructure of the profiles should not have cracks, sinkholes and tears.

In engineering structures, steel is used in the form of rolled products obtained from metallurgical plants and having a different cross-sectional shape.

Sheet steel is classified as follows: sheet steel, cold and hot rolled; thick hot-rolled steel; universal broadband steel, which, due to rolling between four rolls, has even edges, and strip steel.

Corner profiles (figures below) are very widely used to form load-bearing elements that work on axial forces, as connecting elements and various structural details. Corners with smaller thicknesses of shelves are more economical.

Rolled steel profiles

Corners are of two types: equal and unequal.

I-beams used in engineering structures are rolled in two types: ordinary and wide-shelf.

Ordinary I-beams are the main beam profile, they are used mainly for bending elements, which determines their configuration (figure above).

Wide-shelf I-beams up to 1000 mm high have parallel edges of the shelves (figure above). They are produced in three types: normal I-beams (B), wide-shelf I-beams (Sh) and columned I-beams (K). From wide-shelf I-beams, tee profiles are obtained by cutting the wall in the longitudinal direction.

The channel differs from the I-beam in the wall shifted to the edge of the shelves. It is rolled of two types with a slope of the inner edges of the shelves (figure above) and with parallel edges of the shelves.

In addition to the listed main profiles, square steel is used in engineering structures; round steel; bent profiles (figure below), as well as a number of other profiles.

Complex composite profiles replaced by bent ones

a - embedded parts and lining of the grooves of hydraulic gates;

6 - embedded parts of the return path of the hydraulic gate; c - branch of the column of an industrial building

STATE STANDARD OF THE UNION OF THE SSR

PRESSED PROFILES
ALUMINUM
AND ALUMINUM ALLOYS

TECHNICAL CONDITIONS

GOST 8617-81
(ST SEV 3843-82, ST SEV 3844-82)

IPK PUBLISHING STANDAR TOV

Moscow

STATE STANDARD OF THE UNION OF THE SSR

the datein charge of me 01 .01 .83

This standard applies to extruded profiles of aluminum and aluminum alloys intended for the needs of the national economy and for export. 2 , 3).

1. CLASSIFICATION

eleven . Profiles are subdivided: according to type y: solid with a cross-sectional area of ​​up to 200 cm 2 and a circumscribed circle diameter of up to 350 mm; hollow with a cross-sectional area up to 60 cm 2 and a diameter of a circumscribed circle up to 250 mm; according to the state of the material: without heat treatment (hot-pressed data) - denoted by the brand of aluminum or aluminum alloy without additional signs; annealed - M; hardened and naturally aged - T; hardened and artificially aged - T1; incompletely hardened and artificially aged - T5; by type of strength: normal strength - denoted by the grade of the alloy and the state of the material without additional signs; increased strength - P P. Profiles in a hardened and naturally or artificially aged state from alloys of grades AB, D 1, D16, AK4, AK6, 1915, 1925 are made with a maximum thickness of shelves and walls of no more than 150 mm, from an alloy of brand V95 - not more than 125 mm, from alloys of grades AD31, AD33, AD35, 1925 C, 1935, VD1, AVD1, AK M - no more than 100 mm. by appointment: general purpose and I - from aluminum grades A6, A5, A0, AD0, AD1, AD C, AD and aluminum alloys of grades AM c, AMts C, AM g2, AMg3, AMg3S, AMg5, AMg 6, AD31, AD33 , AD35, AB, D1, D16, AK4, AK6, V95, 1915, 1925, 1925 C, VD1, AVD1, AKM; for electrical purposes - from aluminum grades AD0, A D 00, A7, A6, A5, A5 E and aluminum alloys of grades AD31, AD31 E. Note. In the symbolic designation of profiles for electrical purposes, the letters EN are additionally indicated, which are placed after the number or code of the profile 440361 EN (PK 0018 EN). (Changed edition, Rev. No. 2 , 3). 12 . Number or code, length, purpose of profiles, material condition and strength are indicated in the order. In the absence of a requirement for assigned and profiles, they are made as general-purpose profiles. 3).

2. ASSORTMENT

2.1. The shape and dimensions of profiles, cross-sectional areas, diameters of the circumscribed circle and the theoretical mass of 1 m of length - according to GOST 13616-78, GOST 13617-82, GOST 13618-81, GOST 13619-81, GOST 13620-90, GOST 13621-90, GOST 13622-91, GOST 13623-90, GOST 13624-90, GOST 13737-90, GOST 13738-91, GOST 17575-90, GOST 17576-81 and drawings agreed between the manufacturer and the consumer. Note. For profiles to be machined, the contour (contours) of the finished part is indicated in the drawing, indicating the finishing dimensions and linking the contour of the finished part to the contour of the profile. (Changed edition, Rev. No. 1 , 2). 2.2. Limit deviations for the thickness of the shelves S and other cross-sectional dimensions a(dev. 1 - 3) and a" (crap . 4 - 5 ), covering monolithic metal profiles, must correspond: for profiles made of aluminum and aluminum alloys, with the exception of alloys of grades AMg5 and AMg6, - the values ​​\u200b\u200bspecified in table. one; for profiles made of aluminum alloys of grades AM g5 and AMg 6 - the values ​​\u200b\u200bspecified in table l. 2 or in the drawings. (Changed edition, Rev. No. 1, 3).

Crap. 1

Crap. 2

Crap. 3

2.3. Limit deviations in wall thickness ( S 1), forming hollow spaces (Fig. 4, 5), must correspond to the values ​​\u200b\u200bspecified in Table. 1 or 2 with a factor of 1.5 or on the drawings. (Changed edition, Rev. No. 1).

Crap. 4

Crap. 5

(Changed edition, Rev. No. 1). 2.3 a. It is allowed to increase the limiting minus deviations by no more than 2.5 times by the cross-sectional dimensions or individual profile elements subjected to mechanical processing at the consumer, taking into account the allowance for machining to be shown on the drawings. (Introduced additionally, Rev. No. 2). 2.4, 2.5. (Deleted, Rev. No. 1).

Crap. 6 - 9 .

(Excluded, Rev. No. 1).

Table 1

Nominal profile cross section	Maximum deviation of the dimensions of the cross section of the profile with the diameter of the circumscribed circle
		St. 30.0 to 60.0	St. 60.0 to 100.0	St. 100.0 to 150.0	St. 150.0 to 200.0	From v. 200.0 to 250.0	St. 250.0 to 300.0	St. 300.0 to 350.0
Up to 1.5 incl.
St. 1, 5 to 3.0 incl.
" 3 ,0 " 6 ,0 "
" 6 ,0 " 10 ,0 "
" 10 ,0 " 15 ,0 "
" 15 ,0 " 30 ,0 "
" 30 ,0 " 50 ,0 "
" 50 ,0 " 75 ,0 "
" 75 ,0 " 100 ,0 "
" 100 ,0 " 150 ,0 "
" 150 ,0 " 200 ,0 "
" 200 ,0 " 250 ,0 "
" 250 ,0 " 300 ,0 "								± 2,00
" 300 ,0 " 350 ,0 "

table 2

Nominal size of the cross section of the profile	Maximum deviation of the dimensions of the cross section of the profile with the diameter of the circumscribed circle
		St. 30.0 to 60.0	St. 60.0 to 100.0	St. 100.0 to 150.0	St. 150.0 to 200.0	St. 200.0 to 250.0	St. 250.0 to 300.0	St. 300.0 to 350.0
Up to 1.5 incl.
St. 1.5 to 3.0 incl.
" 3 ,0 " 6 ,0 "
" 6 ,0 " 10 ,0 "
" 10 ,0 " 15 ,0 "
" 15 ,0 " 30 ,0 "
" 30 ,0 " 50 ,0 "
" 50 ,0 " 75 ,0 "
" 75 ,0 " 100 ,0 "
" 100 ,0 " 150 ,0 "
" 150 ,0 " 200 ,0 "
" 200 ,0 " 250 ,0 "
" 250 ,0 " 300 ,0 "
" 300 ,0 " 350 ,0 "

2.6. Limit deviations in size b between the free ends of the cross-sectional elements of the profiles, the characteristic shapes of which are shown in Fig. 10 - 13, set as the sum of the maximum deviation of the nominal size, taken from table. 1 or 2, and the maximum deviation of the slope of the profile shelves, equal to ± 0.02 from the height of the shelf h .(Changed edition, Rev. No. 1).

2.7. The value of the corner rounding radii, if they are not indicated on the drawings, is set: not more than 0.5 mm with a shelf and wall thickness of up to 3 mm, including "" 0.6 mm "" "" St. 3 to 6 mm inclusive; "" 0.8mm" ""6" 10mm"""1.0mm"""""10"18mm"""1.2mm"""""18"30mm""" 1 , 6 mm "" "" "30" 50 mm "" "2.0 mm" "" "" 50 mm. At the junction of shelves and walls of different thicknesses, the determination of the permissible rounding radius is carried out according to the greater thickness. (Changed edition, Rev. No. 1). 2.7.1. Limit deviations in the dimensions of radius or cylindrical surfaces, if they are not indicated in the drawings, should not exceed ± 10% of the radius, but not less than ± 0.5 mm. (Changed edition, Rev. No. 2). 2.7.2. The value of blunting of sharp edges is allowed: up to 0.3 mm with a shelf or wall thickness up to 3 mm inclusive; "0.5 mm" "" St. 3 to 15 mm incl.; " 1.0 mm " " " St. 15mm" (Changed edition, Rev. No. 2). 2.7.3. Corner rounding radii and sharp edge blunting up to 1.0 mm are provided by manufacturing technology. (Changed edition, Rev. No. 2). 2.8. The twisting angle around the longitudinal axis per 1 m of the length of any section of the profile should not exceed: 3 ° - with a base surface width of up to 50 mm; 2 ° - with the width of the base surface of St. 50 to 200 mm; 1 ° - with the width of the base surface of St. 200 to 350 mm. 2.8.1. In contractual and legal relations, the twisting of the profile should not be more than the values ​​\u200b\u200bspecified in Table. 3a.

Table 3a*

Diameter of the circumscribed circle	Permissible twisting, no more
		for profile length up to 6 m
Up to 20 incl.
St. 20 to 40 incl.
" 40 " 80 "
" 80 " 120 "
" 120 " 200 "
" 200

(Introduced additionally, Rev. No. 1). * Tab. 3 is excluded. 2.9. Limit deviations of the angular dimensions of the cross-section of profiles, if the angle does not have limit deviations that limit its dimensions, must correspond to those indicated in Table. four.

Table 4 *

*Table 5 is excluded. 2.10. Profiles must be straight. Longitudinal smooth deviation from straightness relative to any plane in any section 1 m long, with the exception of profiles with a bulb or at least one wedge-shaped element, should not exceed: 4 mm - on profiles with a thickness of shelves or walls of St. 4 to 10 mm inclusive; 3 mm - on profiles with a thickness of shelves or walls over 10 mm. On profiles having a bulb or at least one wedge and a bottom element, with a flange thickness of more than 4 mm, the deviation from straightness relative to any plane in any section of the profile 1 m long should not exceed 4 mm. At the request of the consumer, on profiles with a thickness of shelves and walls over 4 to 10 mm, the deviation from straightness should not exceed 3 mm. (Changed edition, Rev. No. 1). 2.11. On profiles with a flange thickness of up to 4 mm inclusive, including profiles with a bulb or at least one wedge-shaped element, a longitudinal deviation from straightness per 1 m of length is allowed, which is eliminated by applying a force of not more than 50 N (5 kgf) on the profile mounted on a flat plate. (Changed edition, Rev. No. 1). 2.12. The total allowable longitudinal deviations from straightness, twisting of the profile should not exceed the product of the allowable deviation from straightness, twisting by 1 m and the length of the profile in meters. (Changed edition, Rev. No. 1). 2.13. Smooth waviness with a wave height of not more than 1 mm is allowed on profiles, and on profiles with a bulb or at least one wedge-shaped element - no more than 2 mm. The number of such wavy places should not be more than one per 1 m of the profile length. Waviness with a wave height of up to 0.2 mm is not limited. 2.14. Transverse smooth deviation from flatness (convexity and concavity) e profiles, the characteristic cross-sectional shapes of which are shown in Fig. 14 - 18, should not exceed: 1% of the width of the shelf - for solid profiles; 2% of the width of the flange or the width of the wall - for hollow profiles, but not less than 0.3 mm. At the request of the consumer on hollow profiles, the transverse deviation from flatness should not exceed 1.5%.

Crap. 14

Crap. 15

Crap. 16

Crap. 17

Crap. 18

(Changed edition, Rev. No. 1) . 2 .15 . (Deleted, Rev. No. 1). 2.16. Profiles are made in lengths: from 1 to 6 m - with a cross-sectional area of ​​\u200b\u200bup to 0.8 cm 2; from 1 to 8 m - with a cross-sectional area of ​​St. 0.8 to 1.5 cm 2; from 1 to 10 m - with a cross-sectional area of ​​St. 1.5 to 200 cm 2. Profiles with a cross-sectional area up to 1.5 cm from aluminum and aluminum alloys of the AMts and AMtsS grades are made up to 3 m long. 2.16.1. Profiles are made of random, measured or multiple measured lengths within the dimensions specified in clause 2.16. 2.16.2. Profiles of multiple measured lengths should be made taking into account the allowance for each cut of 5 mm. (Changed edition, Rev. No. 1). 2.17. Limit deviations along the length of profiles of measured and multiple measured lengths up to 6 m should not exceed: + 10 mm - for profiles with a circumscribed circle diameter of up to 150 mm inclusive; + 15 mm - for profiles with a circumscribed circle diameter over 150 mm. Limit deviations along the length of profiles of measured and multiple measured lengths over 6 m should not exceed +20 mm. (Changed edition, Rev. No. 1). 2.18. Profiles must be cut at right angles. The oblique cut should not exceed 3 ° and bring the profiles beyond the delivery length. 2.19. Limit deviations of individual dimensions of profile elements that are not provided for by this standard, including limit deviations of cavity dimensions, if necessary, must be indicated in the drawings agreed between the manufacturer and the consumer. 2.20. Limit deviations of cross-sectional dimensions, twisting angles and deviation from straightness of profiles with a pronounced uneven section or profiles with a flange thickness ratio of more than 4: 1 are indicated in the drawings agreed between the manufacturer and the consumer. Examples of symbols Profile made of alloy brand D 16, in a hardened and naturally aged state (T), normal strength, shaped section (profile number or code), 3000 mm long: Profile D 16 .T (number or code) × 3000 GOST 8617-81. The same, increased strength (P P), random length: Profile D 16 .T.PP (number or code) GOST 8617-81. Profile made of alloy grade A D31, in a hardened and naturally aged state (T), normal strength, tee section with number 420019 according to GOST 13622-79, random length: Profile (or Taurus) A D31 .T 420019 GOST 8617-81 / GO ST 13622-79. The same, multiple length (KD) 2000 mm: Profile (or Taurus) A D31 .T 420019 × 2000 KD GOST 8617-81 / GOST 13622-79. Profiles for electrical purposes from aluminum alloy in grade AD31, in a hardened and artificially aged state (T1), shaped section, multiple length (KD) 2000 mm: Profile AD31.T1 (profile number) EN × 2000 KD GOST 8617-81. It is allowed not to indicate in the order a reference to standards with profile sizes. (Changed edition, Rev. No. 1 , 2 , 3).

3. TECHNICAL REQUIREMENTS

3.1, Profiles are manufactured in accordance with the requirements of this standard according to the technological regulations approved in the prescribed manner. (Changed edition, Rev. No. 3). 3.1.1. General purpose profiles are made from aluminum grades A6, A5, A0 with a chemical composition according to GOST 11069-74, aluminum grades A D 0, AD1, ADS, AD and aluminum alloys of grades AMts, AMtsS, AMg2, AMg3, AMg3S, AMg5, AMg6, AD31, AD33, AD35, AB, D1, D16, AK4, AK6, V95, 1915, 1925, 1925 C with chemical composition according to GOST 4784-74; from aluminum alloys of grades VD 1, AVD1 and AKM with a chemical composition according to GOST 1131-76; from aluminum alloy brand 1935 with a chemical composition according to normative and technical documentation. Profiles for electrical purposes are made of aluminum grades A 7, A6, A5, A5 E with a chemical composition according to GOST 11069-74, aluminum grades AD00, AD0 and aluminum alloy brand AD31 with a chemical composition according to GOST 4784-74 and brand AD31 E with a chemical composition according to OST 192014-76. (Introduced additionally, Change Number 3). 3.2. The mechanical properties of profiles of normal tensile strength must correspond to the values ​​\u200b\u200bspecified in table. 6. (Changed edition, Rev. No. 1 , 2).

Table 6

Alloy grade	Profile material condition during manufacture	The state of the material of the samples during testing	Thickness of the shelf and l and walls, mm	Tensile strength σ in, MP a (kgf / mm 2)		Relative extension
A 7 A 6 A 5 A5E A0 A D00 A D0 A D1 AD	Without heat treatment		All sizes
A D S	Without heat treatment	Without heat treatment	All sizes
A Mts A Mts S	Without heat treatment	Without heat treatment	All sizes
A Mg2	No heat treatment Annealed		All sizes	No more than 225 (23.0)
A Mg 3	No heat treatment Annealed	No heat treatment Annealed	All sizes
A Mg 3C	Without heat treatment	Without heat treatment	All sizes
A Mg5	No Heat Treat Annealed	No heat treatment Annealed	All sizes
A Mg6	No heat treatment Annealed	No heat treatment Annealed	All sizes
A D31 A D31 E	Without heat treatment		All sizes
		Same	Up to 100 incl.
	Hardened and artificially aged		Up to 100 incl.
	Partially hardened and artificially aged	Incompletely hardened and artificially aged	Up to 100 incl.
A D 33	Without heat treatment		All sizes
	Hardened and naturally composed	Same	Up to 100 incl.
		Hardened and artificially aged	Up to 10 incl.
			St. 10 to 100 incl.
A D35	Without heat treatment	Hardened and naturally aged	All sizes
	Hardened and naturally aged	Same	Up to 100 incl.
		Hardened and artificially aged	Up to 100 incl.
AB	Without heat treatment	Hardened and naturally aged	All sizes
	Hardened and naturally aged	Too	Up to 150 incl.
	Hardened and artificially aged	Hardened and artificially aged	Up to 150 incl.
D1	Without heat treatment	Hardened and naturally aged	Up to 10 incl.
			St. 10 to 20 incl.
	annealed	Annealed	St. 20
			All sizes	No more than 245 (25.0)
	Tempered and naturally aged	Hardened and naturally aged	Up to 10 incl.
			St. 10 to 20 incl.
			St. 20 to 150 incl.
D 16	Without heat treatment	Hardened and naturally built	Up to 5 incl.
			St. 5 to 10 incl.
			St. 10
	annealed	Annealed	All sizes	No more than 245 (25.0)
	Hardened and naturally aged	Hardened and naturally aged	Up to 5 incl.
			St. 5 to 10 incl.
			St. 10 to 150 incl.
At 95	Without heat treatment	Hardened and artificially aged	Up to 10 incl.
			St. 10
	annealed	Annealed	All sizes	No more than 275 (28.0)
	Hardened and artificially aged	Hardened and artificially aged	Up to 10 incl.
			St. 10 to 125 incl.
A K 6		Hardened and artificially aged	All sizes
	Hardened and naturally aged	Same	Up to 150 incl.
	Hardened and artificially aged		Up to 150 incl.
1915	Without heat treatment	Hot pressed with natural aging within 30 - 35 days	Up to 12 incl.
	Without heat treatment	Hot pressed with natural aging within 2 - 4 days	Up to 12 incl.
	annealed	Annealed	All sizes	No more than 277 (28.0)
	Hardened and naturally aged	Hardened and naturally aged for 30 - 35 days	Up to 150 incl.
	Hardened and naturally aged	Hardened and naturally aged for 2 - 4 days	Up to 150 incl.
	Hardened to naturally aged	Hardened and artificially aged	St 12 to 150 incl.
1925	Without heat treatment	Hot press in bathrooms with natural aging for 30 - 35 days	Up to 12 incl.
	Without heat treatment to and	Hot pressed with natural aging within 2 - 4 days	Up to 12 incl.
	annealed	Annealed	All sizes	No more than 294 (30.0)
	Hardened and naturally aged		St. 12 to 150 incl.
	Hardened and naturally aged	Hardened and naturally aged for 2 - 4 days	Up to 150 incl.
1925 C	Hardened and naturally aged	Hardened and naturally aged for 30 - 35 days	Up to 100 incl.
1935	No heat treatment	Naturally aged within 30 - 35 days	Up to 10 incl.
	No heat treatment	Naturally aged within 2 - 4 days	Up to 10 incl.
	Hardened and naturally aged	Hardened and naturally aged for 30 - 35 days	Up to 100 incl.
	Hardened and naturally aged	Hardened and naturally aged within 2 - 4 days	Up to 100 incl.
ID 1	Without heat treatment	Hardened and naturally aged	All sizes
	Hardened and naturally aged	Same	Up to 100 incl.
A B D1-1	Without heat treatment	Hardened and naturally aged	All sizes
	Hardened and naturally aged	Same	Up to 100 incl.
A KM	Without heat treatment	Hardened and naturally aged	All sizes
		Hardened and artificially aged	All sizes
	annealed	Annealed	All sizes	No more than 196 (20.0)
	Weathered and Naturally Aged	Hardened and naturally aged	Up to 100 incl.
A K4	Without heat treatment	Hardened and artificially aged	All sizes
	Hardened and naturally aged		Up to 150 incl.
	Hardened and artificially aged
Notes: 1 . Mechanical properties of profiles of any state of the material from aluminum grades A7, A6, A5, A5 E, A0, AD00, AD0, AD, AD C, AD1 and aluminum alloys of grades AMts, AMts C, AM g2, AMg 3, AD31, AD31 E, AD33, AD35, AV, D1, 1925, VD1, AV D1-1 and AK M, as well as the mechanical properties of profiles without heat treatment and in the annealed state from aluminum alloys of grades D16, V95, 1915 and 1935 are provided by manufacturing technology. 2. At the request of the consumer, the norms for the relative elongation of profiles from an alloy of the AM g2 brand must be at least 15%.

3.3. The mechanical properties of profiles with increased tensile strength must correspond to the values ​​\u200b\u200bspecified in Table. 7.

Table 7

Alloy grade	Profile material condition	Condition of the test samples	Shelf or wall thickness, mm	Temporary resistance σ in, MPa (kgf / mm 2)	Yield strength σ 0.2, MPa (kgf / mm 2)	Relative extension
	Without heat treatment	Hardened and naturally aged	Up to 10 incl.
			St. 10 to 20 incl.
			St. 20
	Hardened and naturally aged	Same	Up to 10 incl.
			St. 10 to 20 incl.
			St. 20 to 150 incl.
	Without heat treatment	Hardened and naturally aged	Up to 5 incl.
			St. 5 to 10 incl.
			St. 10 to 20"
			St. 20 to 40"
			St. 40 to 80"
			St. 80
	Hardened and naturally aged	Same	Up to 2 incl.
			St. 2 to 10 incl.
			St. 10 to 20 incl.
			St. 20 to 40"
			St. 40 to 80"
			St. 80 to 150"
	No heat treatment	Hardened and artificially aged	Up to 5 incl.
			St. 5 to 10 incl.
			St. 10 to 75"
			St. 75 to 112"
			From v. 112 to 125"
	Hardened and artificially aged	Same	Up to 5 incl.
			St. 5 to 10 incl.
			St. 10 to 75"
			St. 75 to 125"

(Changed edition, Rev. No. 2). 3.4. It is also allowed to manufacture profiles from alloys of grades AD31, 1915, 1925, VD1 and AVD1-1 without heat treatment (instead of the hardened and naturally aged state), provided that the mechanical properties of the profiles meet the requirements of the hardened and naturally aged state. 3.5. Indicators of mechanical properties in terms of tensile strength and yield strength of profiles from alloys of grades AD31, AD33, AD35, AV, D1, D16, AK6 and V95, manufactured in a hardened and aged state and re-hardened at the consumer enterprise, may be less, but not more than 20 MP a (2 kgf / mm 2) of the indicators given in table. 6 or 7. 3.5 a. The electrical resistance of profiles for electrical purposes to direct current, calculated for a cross section of 1 mm 2, a length of 1 m and a temperature of 20 ° C, should not be more than: 0.0290 Ohm - from aluminum grades AD0, AD00, A7, A6, A5, A5 E ; 0.0310 Ohm - from aluminum alloys of grades AD31 and AD31 E without heat treatment (hot pressed); 0.0350 Ohm - from aluminum alloys of grades AD31 and AD31 E in a hardened and naturally aged state; 0.0325 Ohm - from aluminum alloys of AD31 and AD31E grades in a hardened and artificially aged state; 0.0330 Ohm - made of aluminum alloy grade AD31, incompletely hardened and artificially aged. (Introduced additionally, Rev. No. 3). 3.6. The surface of the profiles should not have cracks, delaminations, bubbles, non-metallic inclusions, corrosion spots and traces of saltpeter. ( 3.7. On the outer surface of the profiles, the following are allowed: captivity, nicks, dents, various kinds of pressing, if the depth of their occurrence does not lead the profile beyond the minus limit deviations in size; risks, scuffs and scratches, if the depth and x occurrence for all alloys, except for AMg5 and AMg6, does not exceed 0.15 mm, and for alloys of grades AMg5 and AMg6 - not more than 0.20 mm and if the control cleaning does not take them out of the profile minus limit deviations in size; tint colors, dark and light spots and stripes; traces of cleaning defects with an abrasive wheel in the form of longitudinal and circular scratches with a depth of not more than 0.1 mm. At the request of the consumer, on the front surface of the profiles indicated on the drawing, from alloys of the AM ts, AMtsS and AD31 grades, risks with a depth of not more than 0.03 mm, caps, nicks, dents, various types of pressing, scuffing, scratches with a depth of not more than 0.1 mm. (And amended edition, Rev. No. 1). 3.8. It is allowed on profiles or profile elements subjected to mechanical processing at the consumer, the depth of occurrence of surface defects within half of the allowance for machining. (Changed edition, Rev. No. 2). 3.9. Local gentle cleaning of profiles is allowed if it does not display the dimensions of the profiles for minus limit deviations. Cleaning of cracks is not allowed. 3.10. The macrostructure of the profiles should not have cracks, looseness and shrinkage. 3.11. On the macrostructure of the profiles, non-metallic inclusions are allowed in the form of dots with a size of not more than 0.5 mm or in the form of strokes with a length of not more than 3 mm, if their number does not exceed: 2 pcs. - for profiles with a cross section of up to 10 cm; 3 pcs. - for profiles with a section of St. 10 to 50 cm; 5 pieces. - for profiles with a section of St. 50 cm; and intermetallics on profiles from an alloy of the AMg5 brand with a size of up to 0.5 mm in an amount of not more than 5 pieces, and on profiles from an alloy of the AMg6 brand with a size of not more than 0.1 mm in the form of single scattered points; surface delaminations to a depth of not more than the minus limit deviation; large-grain and steel rim around the entire perimeter, if the depth of its occurrence does not exceed 5 mm; discontinuity weld on hollow profiles in the form of strokes, if their total length does not exceed 30% of the finished thickness of the profile wall at the weld; surface defects with a depth within the established limit deviations. Notes: 1. A coarse-grained rim is allowed that goes beyond the limits of the permissible depth of occurrence, if the mechanical properties of the samples cut from the rim in the longitudinal direction and correspond to those indicated in Table. 6 or 7 for the appropriate shelf thickness. 2. The length of the strokes in the weld is allowed, which goes beyond the specified norm, if the mechanical properties of the samples cut out at the weld in the transverse direction correspond to those indicated in Table. 6 or 7 or when testing for expansion (wedging) of the samples, their destruction did not occur or the destruction did not occur along the weld. 3.12. It is allowed on the macrostructure of the profiles subjected to machining, surface delaminations with a depth of not more than the machining allowance and a large crystalline rim along the entire perimeter, if its occurrence depth does not exceed 5 mm in excess of the machining allowance. 3.13. On profiles subjected to hardening, with a flange or wall thickness up to 10 mm inclusive, through recrystallization is allowed throughout the entire section of the flange or wall, if the mechanical properties of the samples cut from them correspond to those indicated in Table. 6 or 7.3.14. In the zone of the welded joint of hollow profiles, recrystallization is allowed throughout the entire thickness of the wall without limiting its width. 3.15. The microstructure of the profiles that have been hardened should not have any burn marks.

4. ACCEPTANCE RULES

4.1. Profiles are accepted in batches. The batch must consist of profiles of the same brand of aluminum or aluminum alloy, one material condition, one melt or heat treatment charge, one size, one type of strength and is issued with one quality document. It is allowed to make batches of heat-treated profiles taken from several heat-treated cages, or from unheat-treated profiles taken from several heats, provided that each charge or heat complies with the requirements of this standard. The quality document must contain: the name and trademark of the manufacturer; name of the consumer; brand of aluminum or aluminum alloy, material condition and type of strength; designation (number or code) of the profile; lot number; lot net weight; test results (for mechanical properties, indicate only the maximum and minimum values); shipment date; designation of this standard. (Changed edition, Rev. No. 2). 4.2. To determine the chemical composition, two profiles are taken from the batch. The manufacturer is allowed to determine the chemical composition of aluminum and aluminum alloys on each heat. Each heat is subjected to chemical analysis to determine the alloying components and the main impurities. Other impurities are not determined. 4.3. Checking the condition of the outer surface and geometric dimensions is subjected to each profile. On profiles with bulbs, control measurements on bulbs are not carried out. Dimensions for reference or provided by the tool on the profiles do not control. (Changed edition, Rev. No. 2 , 3). 4.4. To check the mechanical properties of general-purpose profiles from aluminum alloys of grades AMg3S, D16, AK6, V95, 1915, 1925 C, 1935 and AK4 in a hardened and aged state, 5% of profiles (pressings) are selected, and for alloys of grades AMg5 and AMg6 of any state of the material - 2%, but not less than two profiles (compressions) from the lot. The manufacturer checks the mechanical properties of profiles made of alloy grades 1915 and 1935 in a hardened and aged state after 2–4 days of natural aging, and the consumer after 30–35 days of natural aging. (Changed edition, Rev. No. 1 , 2 , 3). 4.4 a. To check the mechanical properties and electrical resistance of profiles for electrical purposes, at least 2% of the profiles from the batch are selected, but at least three pieces. (Introduced additionally, Rev. No. 3). 4.5. To check the macrostructure of profiles made of aluminum alloys grades AMg5, AMg6, D16, AK 6, V95, 1915 and AK4, 2% of the profiles (compressions) from the batch are selected, but not less than two profiles (compressions). Checking the macrostructure of general purpose profiles from other alloys is carried out at the request of the consumer. (Changed edition, Rev. No. 3). 4.6. When completing a batch of several heat treatment cages or from several melts, the mechanical properties and macrostructure are checked on at least two profiles from each heat treatment cage or melt. 4.7. (Excludeh en, Change. No. 2). 4.8. To check the microstructure of general purpose profiles subjected to quenching, one profile is selected for overburning from each heat in the heat treatment charge. Profiles made of alloys grades 1915, 1925, 1925 C, 1935 and AD31, subjected to hardening on a press, are not subjected to a microstructure check for the absence of overburning. (Changed edition, Rev. No. 1 , 2 , 3). 4.9. To check general-purpose profiles hardened in saltpeter baths, for the presence of saltpeter on the surface, 1% of the profiles from the batch are selected, but not less than one profile from each batch. 4.10. Upon receipt of unsatisfactory test results for at least one of the indicators, it is re-tested on a double sample taken from the same batch. The retest results apply to the entire lot. The manufacturer is allowed to carry out piece-by-piece testing of profiles. (Changed edition, Rev. No. 1).

5. TEST METHODS

5.1. Sampling and preparation of samples to determine the chemical composition of profiles is carried out in accordance with GOST 24231-80. The determination of the chemical composition of aluminum is carried out by the chemical method according to GOST 25086-87, GOST 12697.1-77 - GOST 12697.12-77 or by the spectral method according to GOST 3221-85, aluminum alloys are carried out by the chemical method according to GOST 25086-87, GOST 11739.1-90, GOST 11739.2- 90 GOST 11739.3-82 GOST 11739.4-90 GOST 11739.5-90 GOST 11739.6-82 GOST 11739.7-82 11739.16-90 - GOST 11739.19-90, GOST 11739.20-82, GOST 11739.21-90, GOST 11739.22-90, GOST 11739.23-82, GOST 11739.24-82 or by the spectral method according to GOST 7727-81. If there is disagreement, the chemical composition is determined by the chemical method. (Changed edition, Rev. No. 1 , 2). 5.2. Measurement of the dimensions of the cross section of the profiles is carried out with a micrometer according to GOST 6507-90 or GOST 4381-87, a caliper with an irkul according to GOST 166-89, a goniometer according to GOST 3749-77, a rad and a gauge according to TU 2-034-228-88, a bore gauge according to GOST 10-88. Measurement of the length of the profiles is carried out with a measuring metal tape according to GOST 7502-89 or a metal ruler according to GOST 427-75. It is allowed to measure with other measuring instruments that provide the necessary measurement accuracy. (Changed edition, Rev. No. 3). 5.2.1. The deviation from the straightness of the profiles is checked in the following way: the profile is placed on the control plate according to the normative and technical documentation. A measuring metal ruler 1 m long according to GOST 427-75 is applied to the profile being checked, and using probes according to TU 2-034-225-87, the maximum distance between the ruler and the profile is measured according to GOST 26877-86. It is allowed to use other methods and measuring instruments that provide the necessary accuracy. In the presence of disagreements, the deviation from straightness is determined according to GOST 26877-86. (Changed editorialand I, Rev. No. 2). 5.3. Inspection of the surface of the profiles is carried out without the use of magnifying devices. The depth of occurrence of defects is measured with a profile meter according to GOST 19300-86 or an indicator (special) depth gauge according to normative and technical documentation. (Changed edition, Rev. No. 2 , 3). 5.3.1. Cleaning of profiles is carried out only in the longitudinal direction with an abrasive wheel, scraper or sandpaper on a fabric basis not larger than the 6th grit number according to GOST 5009-82. The final cleaning to a smooth surface is carried out with a paper-based sandpaper not larger than the 10th grit number according to GOST 6456-82. 5.4. Sampling for tensile testing is carried out according to GOST 24047-80. Tests of mechanical properties are carried out by the method of destructive testing in accordance with GOST 1497-84 or by the method non-destructive testing(eddy currents) according to the regulatory and technical documentation of the manufacturer and body. (Changed edition, Rev. No. 1 , 2). 5.4.1. To check the mechanical properties by the method of destructive testing, one sample is cut from each tested profile from the output end in the longitudinal direction. The estimated length of the sample with a profile flange thickness of 10 mm or less is determined by the formula l 0 = 5 ,65√F 0 , and with a shelf thickness of more than 10 mm according to the formula l 0 = 5d 0 . If it is impossible to manufacture a standard sample, tests are carried out on samples, the shape and dimensions of which are established by the manufacturer. In this case, only the temporary resistance is determined. If it is not possible to manufacture a sample, the profiles are delivered without testing the mechanical properties. 5.4.2. Verification of mechanical properties by the eddy current method is carried out on the surface of the profiles in the state after hardening and aging. 5.5. The macrostructure of the profiles is checked on a transverse macrotemplate cut from the weighted end of the checked profile. The quality of the weld on hollow profiles is checked on a transverse macro sample cut from the output end of the tested profile. If there is a sink on the checked profiles (provided that the macrostructure complies with other requirements), it must be completely removed, while the remaining profiles of the batch are cut off by an amount equal to the length of the cut end from the checked profile. (Changed edition, Rev. No. 2). 5.5.1. It is allowed to check the macrostructure of thin-walled profiles (shelf thickness up to 5 mm) using the fracture method. 5.6. The microstructure of the profiles is checked by the metallographic method on one sample or by the eddy current method according to the manufacturer's method. In the presence of overburning, repeated control of the microstructure is not allowed. 5.7. The presence of saltpeter is checked by applying a drop of a 0.5% solution of diphenylamine in sulfuric acid to the surface of the profile anywhere (10 cm of distilled water and 25 cm of sulfuric acid with a density of 1.84 g / cm 3 are added to a sample of 0.5 g of diphenylamine) . When diphenylamine is dissolved, the volume of the solution is adjusted to 100 cm 3 by adding sulfuric acid with a density of 1.84 g/cm 3 . Intensive blue drop of the solution after 10 - 15 s indicates the presence of saltpeter in this place. After the test, the drop is removed with filter paper, and the tested area is thoroughly washed with water and wiped dry. If nitrate is detected, a batch of profiles is subject to repeated washing and re-control for the presence of nitrate on the surface of the profiles. 5.8. The electrical resistance of the profiles is determined according to GOST 7229-76 or by other methods that provide the specified measurement accuracy. If there is disagreement, the determination of electrical resistance is carried out according to GOST 7229-76. (Introduced additionally, Rev. No. 3).

6. MARKING, PACKAGING, TRANSPORT AND STORAGE

6.1. The profiles are tied into bundles, to which labels are attached indicating the grade of the alloy, the state of the material, the type of strength, the batch number and the stamp of the technical control department of the manufacturer. 6.1.1. On profiles that are not bundled, the following should be embossed or painted: the manufacturer's trademark, aluminum or aluminum alloy brand, material condition, type of strength, lot number and stamp technical control manufacturer. The stamp is applied at the output end at a distance from the profile end and not more than 20 mm - for profiles with a flat part of more than 30 mm and not more than 50 mm - for profiles with a flat part from 15 to 30 mm. (Introduced additionally, Rev. No. 1). 6.2. On the profiles from which samples were taken for mechanical testing, additional markings are applied indicating the serial number. 6.3. Temporary anti-corrosion protection, packaging, transportation and storage - GOST 9.510-93. (ChangedI editorial, Rev. No. 2). 6.4. Transport marking of packages - in accordance with GOST 14192-77 with additional inscriptions: name of the semi-finished product; alloy brand; the state of the material and the type of strength; profile number or code; batch number. 6.4.1. The marking of profiles intended for export is carried out in accordance with the work order of the foreign trade association. (Introduced additionally, Rev. No. 2).

INFORMATION DATA

1 . APPROVED AND PUT INTO EFFECT by the Decree of the USSR State Committee for Standards dated 27 .02 .81 № 1093 2 . INTRODUCED TO REPLACE GOST 8617-75 3 . The standard fully complies with ST SEV3843-82 , ST SEV 3844-82 4 . The standard complies with the international ISO standard6362 /2-87 for grades AD31, AD33, AD35 in terms of tensile strength and yield strength 5 . REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS