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long products  coils |
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| PRODUCTS |
STANDARD |
DIMENSION |
LIMIT DEVIATIONS |
| Wire rod coils (plain surface) |
STAS 438/1-89 |
Φ8 - 24 mm |
Φ 8 mm: +0.3 |
| Φ 10-20 mm: +0.3/-0.5 mm |
| Φ 22 - 24 mm: +0.5/-0.8 mm |
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| Wire rod coils (ribbed surface) |
STAS 438/1-89 |
Φ8 - 20 mm |
|
| Φ 8-16 mm: +0.3/-0.5 mm |
| Φ 18-20 mm: +0.4/-0.5 mm |
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| STEEL GRADE |
STANDARD |
CHEMICAL COMPOSITION ON MOLTEN STEEL, % |
| C, max. |
Si, max. |
Mn, max. |
S, max. |
P,max. |
Ti (Nb), max. |
| OB37 |
STAS 438/1-89 |
0.23 |
0.4 |
0.75 |
0.045 |
0.045 |
- |
| PC52 |
STAS 438/1-89 |
0.22 |
0.55 |
1.6 |
0.045 |
0.045 |
0.06 |
| STEEL GRADE |
STANDARD |
Φ (mm) |
Rp 0.2 (N/mm 2) min. |
Rm (N/mm 2) min. |
A 5 (%) min. |
A 10 (%) min. |
Φ dorn la indoire la rece, la 180 o |
| OB37 |
STAS 438/1-89 |
6 - 12 |
255 |
360 |
25 |
- |
0.5Φ |
| 14 - 24 |
235 |
| PC52 |
STAS 438/1-89 |
6 - 14 |
355 |
510 |
20 |
- |
3Φ |
| 16-20 |
345 |
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