| |
|
| Grades |
Tensile strength (for wire dia upto 7 mm)
Min |
C % |
Si % |
Cr % |
Va % |
Applications |
|
| 1 S |
150 |
0.45-0.55 |
0.15-0.35 |
0.90-1.20 |
0.15-0.30 |
Cold formed helical springs,
volute springs, etc. |
| 1 D |
145 |
0.45-0.55 |
0.15-0.35 |
0.90-1.20 |
0.15-0.30 |
| 2 S |
175 |
0.50-0.60 |
1.20-1.60 |
0.50-0.80 |
- |
| 2 D |
175 |
0.50-0.60 |
1.20-1.60 |
0.50-0.80 |
- |
|
|
S = Static stressed springs, D = Dynamic
stressed springs |
|
|
|
|
