GOST 18591-91

• gost-18591-91.pdf (235.92 KiB)
  ГОСТ 18591-91

GOST 18591−91 special aluminum Profiles. Assortment. Technical requirements

GOST 18591−91
Group В52

STATE STANDARD OF THE USSR

SPECIAL ALUMINUM PROFILES

Assortment. Technical requirements

Aluminium special. Range of sizes

GST 18 1140

Date of introduction 1993−01−01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of defense industry of the USSR

DEVELOPERS

V. Soloviev, V. F. Myzin, N. F. Romanenko, L. I. Kornilov, V. Stakhov

2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee on management of quality and standards from 03.07.91 N 1195

3. The term of the first check — 1995

the frequency of inspection — 5 years

4. REPLACE GOST IN 18591−73

5. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

______________
* On the territory of the Russian Federation GOST 4784−97, here and hereafter. — Note the manufacturer’s database.

This standard applies to aluminium profiles and aluminum AD1 brands splavov, 1, AM4, manufactured by extrusion with subsequent drawing or cold extrusion.

All standard requirements are mandatory.

1. CLASSIFICATION

Profiles are classified by:

the form of preparation (shape and dimensions correspond to the profile numbers);

condition of material:

hardened and naturally aged aluminum alloys D1 and AM4 — T;

cold-worked aluminum brand AD1 and aluminum alloy grade D1 — N.

2. ASSORTMENT

2.1. Profile numbers, basic dimensions, options shall be as given in table.1.

2.2. The profile sizes N 3−9 and their parameters should match the table.2.

Table 1

Table 2

Dimensions, mm

2.3. The profile sizes N 10−12 and their parameters should match the table.3.

Table 3

Dimensions, mm

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

aluminum brand AD1 — 2700 kg/m;

aluminum alloys D1 and AM4 — 2800 kg/m.

2.5. An unspecified corner radii of the profiles must be no more than 0.5 mm.

2.6. The local curvature of the profile must not exceed 5 mm per 1 m length.

Allowed by agreement of the parties to produce the profiles with the local curvature does not exceed 2 mm per 1 m length.

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

Allowed by agreement of the parties to produce profiles with a torsional angle of not more than 2° per 1 m length.

2.8. Profiles are extruded with subsequent drawing, are made of random length from 1,5 to 3 m.

Allowed in the party, cropped profile with a length of not less than 0.7 m in the amount of 10% of the batch weight.

2.9. The length of the profiles manufactured by cold extrusion, established by agreement of the parties.

2.10. The profiles must be cut at right angle. Cut end Squareness, mm should not exceed 3°, and output profiles outside the sample length.

3. TECHNICAL REQUIREMENTS

3.1. Profiles should be made:

N 1 — aluminum brand AD1 according to GOST 4784;

N 2−17 — aluminum alloy grade D1 according to GOST 4784;

N 18 — AM4 aluminum alloy, the chemical composition which must comply with the specified in table.4.

Table 4

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

Allowed by agreement of the parties specified profiles manufacturing by extrusion with subsequent drawing.

Profiles N 2, 4, 6−12, 15, 18 are produced by extrusion with subsequent drawing.

3.3. The mechanical properties of the profiles:

temporary resistance profiles, manufactured by extrusion with subsequent drawing shall be those specified in table.5;

temporary resistance profiles manufactured by cold extrusion, established by agreement of the parties;

elongation and yield strength are set by agreement of the parties.

Table 5

_______________
* Consistent with the original. — Note the manufacturer’s database.

Note. Temporary resistance determined on samples cut from the profiles, re-hardening the enterprise, the consumer, can be 19.6 MPa (2 kgf/mm*) less the relevant indicators.
_______________
* Consistent with the original. — Note the manufacturer’s database.

Examples of symbols:

Profile of alloy grade D1, tempered and naturally aged, N 13, produced by cold extrusion:

Profile D1-T-13-x — 18591−91

The same aluminum brand AD1, — worked, N 1, obtained by cold pressing:

Profile of AD1-N-1-x — 18591−91

The same, of alloy grade AM4, tempered and naturally aged N 18, obtained by extrusion with subsequent drawing:

Profile AM4-T-18 18591−91

3.4. On the surface profiles do not allow dirt, cracks, delamination, non-metallic inclusions, spots of corrosion origin.

3.5. On the outer surface of the profiles allowed:

slivers, nicks, dents, risks, point scoring, if the depth does not display the profile for the maximum deviations in size.

The total length of the segments of the profile with these defects should not be more than 15% of the entire length of the profile:

nicks, voids, scratches, risks, tracks changes, with depth, for outputting a limit deviation, if the length of the profile with these defects does not exceed 10 mm and the number of such segments is not more than two 1 m lengths;

color tint, dark and light spots and stripes, traces of Stripping defects in the abrasive wheel in the longitudinal and circular grooves with a depth of not more than 0.1 mm.

3.6. The roughness parameter of the profile must be no more than 100 according to GOST 2789.

At the request of the consumer profiles are supplied with a surface finish of 3.2.

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

The electronic text of the document
prepared by JSC «Code» and checked by:
the official publication of the
M.: Publishing house of standards, 1991