Cold rolled brass sheets
|
Standart documents:
GOST 2208-2007 - foil, ribbons, sheets and plates brass.
DSTU GOST 2208:2008
BS EN 1652:1998 - Copper and copper alloys. Plate, sheet, strip, tape drives, and general purpose.
Material:
Ë63, Ë68, Ë90, ËÑ59-1 with the chemical composition according to GOST 15527-2004 (DSTU GOST 15527:2005)
CuZn10, CuZn30, CuZn33, CuZn36, CuZn37 with the chemical composition of BS EN 1652:1998
Usage: used in various industries
Requirements:
1. The geometric dimensions according to GOST 2208-2007 (DSTU GOST 2208:2008) and BS EN 1652:1998
Thickness: 0.4 mm to 12.0 mm
Width: 600 mm
Length: 500 mm to 2000 mm
Dimension for thickness, width and length according to GOST 2208-2007 (DSTU GOST 2208:2008), BS EN 1652:1998.
2. Sheets made the following GOST 2208-2007 (DSTU GOST 2208:2008):
|
Alloy |
Thickness, mm |
State |
|
Ë63 |
0,4-1,0 |
solid, extra solid, solid, spring |
|
0,4-2,0 |
soft, semisolid, solid, extra solid | |
|
0,4 – 12,0 |
soft, semisolid, solid | |
|
Ë68 |
0,4- 2,0 |
soft, semisolid, solid, extra solid |
|
0,4-12,0 |
soft, semisolid, solid | |
|
Ë90 |
0,4-12,0 |
soft, semisolid, solid |
|
ËÑ59-1 |
0,5 - 6,0 |
soft, solid |
3. Mechanical properties of strips depending on the state and the alloy:
3.1. For sheets GOST 2208-2007 (DSTU Standard 2208:2008)
|
Alloy |
State |
Ultimate strength,
|
Relative
|
|
Ë90 |
soft |
230-340 |
36 |
|
semosolid |
290-390 |
10 | |
|
solid |
at least 350 |
3 | |
|
Ë68 |
soft |
280-370 |
42 |
|
semosolid |
340-470 |
20 | |
|
solid |
430-540 |
10 | |
|
extrasolid |
at least 520 |
– | |
|
Ë63 |
soft |
290-400 |
38 |
|
semosolid |
340-470 |
20 | |
|
solid |
410-570 |
8 | |
|
extrasolid |
510-640 |
4 | |
|
spring solid |
at least 610 |
– | |
|
ËÑ 59-1 |
soft |
340 - 470 |
25 |
|
solid |
460 - 610 |
5 |
3.2. For sheets of BS EN 1652:1998
|
Alloy |
State |
Ultimate strength,
|
Elongation δ,%,
| |
|
For thicknesses up to and including 2.5 mm |
For thickness over 2.5 mm | |||
|
CuZn10 |
R240 |
240 - 290 |
36 |
45 |
|
R280 |
280 - 360 |
13 |
20 | |
|
R350 |
at least 350 |
4 |
8 | |
|
ÑuZn30 |
R270 |
270 - 350 |
40 |
50 |
|
R350 |
350 - 430 |
21 |
33 | |
|
R410 |
410 - 490 |
9 |
15 | |
|
R480 |
at least 480 |
– |
– | |
|
ÑuZn33 |
R280 |
280 - 380 |
40 |
50 |
|
R350 |
350 - 430 |
23 |
31 | |
|
R420 |
420 - 500 |
420 |
500 | |
|
ÑuZn36 ÑuZn37 |
R300 |
300 - 370 |
38 |
48 |
|
R350 |
350 - 440 |
19 |
28 | |
|
R410 |
410 - 490 |
8 |
12 | |
|
R480 |
480 - 560 |
3 |
– | |
|
R550 |
at least 550 |
– |
– | |
Camber sheets up to 4.0 mm should not exceed 5 mm to 1 m in length, thickness exceeding 4,0 mm - 8 mm to 1 m in length.
The deflection of cold-rolled sheets semisolid, solid, extra solid and solid-state spring should not exceed 1 mm per 100 mm width and 20 mm for 1 m length of the sheet. The deflection of the sheets of soft state is not regulated.
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