GOST 2208-91. Tapes brass general purpose. Technical specifications
You are interested in GOST 2208−91 «brass Strips for General purposes. Technical conditions» from the company — supplier Alekhlas? Here you will find the necessary information on the topic.
Scope
This standard applies to brass strip used in various industries (with the exception of the radiator strips with thickness up to 0.25 mm).
Technical requirements
Tape manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner, of the brands of brass L90, L85, L80, L68, .L63, LS59−1, Lmc58−2 with the chemical composition according to GOST 15527.
Basic parameters and dimensions
The thickness of the tapes and tolerances for thickness depending on width shall be as given in table 1.
The width of the strips and limit deviations on width depending on thickness shall be as given in table 2.
The length of the strips depending on the thickness shall be as given in table 3.
Table 1
mm
The width of the ribbons | Maximum deviations in thickness of strips with a width of | ||||
from 10 to 300 | over 300 to 600 | ||||
normal precision manufacturing | manufacturing high precision | normal precision manufacturing | manufacturing high precision | ||
0,05 0,06 0,07 0,08 0,09 |
-0,01 | - | - | - | |
0,10 0.12 0,14 |
-0,02 | -0,04 | |||
0,15 0,16 0,17 0,18 0,19 0,20 0,22 |
-0,03 | -0,02 | |||
-0,05 | |||||
0,25 0,28 0,30 0,35 |
-0,04 | -0,03 | |||
-0,06 | |||||
0,40 0,45 |
-0,05 | -0,04 | |||
0,50 0,55 0,60 0,65 0,70 |
-0,06 | -0,07 | -0,06 | ||
-0,08 | -0,07 | ||||
-0,05 | |||||
0,75 0,80 0,85 0,90 |
-0,07 | ||||
-0,06 | -0,09 | — 0,08 | |||
The width of the ribbons | Maximum deviations in thickness of strips with a width of | ||||
from 10 to 300 | over 300 to 600 | ||||
normal precision manufacturing | manufacturing high precision | normal precision manufacturing | manufacturing high precision | ||
Of 1.00 1,10 |
-0,08 | -0,11 | -0,11 | -0,10 | |
1,20 1,30 1,35 1,40 1,50 |
-0,09 | ||||
-0,07 | -0,12 | -0,11 | |||
1,60 1,70 |
-0,10 | -0,08 | -0,14 | -0,13 | |
1,80 1,90 Of 2.00 |
-0,11 | -0,15 | -0,14 | ||
Supplier — the company Avecho offers various types of products from alloys of brass domestic and foreign production that meets the requirements of the standards. Products are offered at affordable prices from the manufacturer. Supplier guaranteed timely delivery at any address specified by the consumer.
Table 2
Belts width | Limit deviation of the ribbons with thickness of | |||
to 1.00 incl. | St. of 1.00 | |||
normal precision manufacturing | high precision manufacturing |
normal precision manufacturing | manufacturing high precision | |
10, 12, 15, 18, 20, 22, 25, 28, 30, 35, 40, 45, 50, 60, 80, 90, 100, 120, 150 | -0,4 | - | -0,7 | -0,6 |
180, 200, 220, 250, 280 | -0,7 | - | A 1.0 | - |
300, 350, 400, 500, 600 | -1,2 | A 1.0 | 1.6 million | -1,2 |
C. 4 GOST 2208−91
Table 3
The thickness of tape, mm | Length of strips, m, not less |
From 0.05 to 0.50 «To 0.55» to 1.00 «1,10» of 2.00 |
30 20 10 |
Mechanical properties
Shall be as specified in table 5.
Table 5
Brand of brass | The status of the tape | Temporary resistance, MPa | Elongation, %, not less than |
L90 | Soft Semi-Solid Solid | From 230 From 290 to 370 to 400 (30 to 41) At least 350 |
36 10 3 |
L85 | Soft Semi-Solid Solid | From 250 to 360 From 320 to 430 At least 390 |
38 12 3 |
L80 | Soft Semi-Solid Solid | From 250 to 370 From 330 to At least 390 |
40 15 3 |
L68 | Soft Semi-solid Solid Particularly twsta | From 280 to 390 From 340 to 430 From 430 to 540 At least 520 |
42 20 30 |
L63 | Soft Semi-hard Hard extra hard Spring hard | From 290 to 410 From 340 to 470 From 410 to 570 From 510 to 640 Not less than 610 |
38 20 8 4 - |
Brand of brass | The status of the tape | Temporary resistance MPa |
The elongation d, %, not less than |
LS59- 1 | Soft Hard very hard |
From 340 to 490 (35 to 50) From 460 to 640 (from 47 to 65) At least 590 (at least 60) |
25 5 3 |
ЛМд58- 2 | Soft Semi-Solid Solid | From 350 to 490 (from 39 to 50) From 420 to 590 (from 43 to 65) Not less than 570 (at least 58) |
30 15 4 |
Notes:
The upper limit of the strength may be higher, but not more than 20 MPa while maintaining the minimum elongation or depth of the extrusion;
Temporary resistance is determined for strips with a thickness of 0.3 mm or more elongation for strips with a thickness of 0.5 mm or more. The mechanical properties of ribbons with thickness less than 0.3 mm are reference.
Supplier — the company Alekhlas — offers to purchase assortment of various brass alloys Russian and foreign production. Products can be purchased at a price formed on the basis of European and world standards. Possible, wholesale and retail, for regular customers a flexible system of discounts.