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(ESTD
- 1975)
ISO - 9001 : 2000 COMPANY |
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(ESTD
- 1975)
ISO - 9001 : 2000 COMPANY |
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Standard Tolerances
Typical Valve Steels
| SAE | BS | JS | Wr No. | C | Si | Mn | Ni | Cr | N |
| SIL1 | EN52 | SUH1 | 1.4718 | 0.40
- 0.50 |
3.00
- 3.50 |
0.60 max. |
0.60 max. |
7.50
- 9.50 |
|
| SILXB | EN59 | 1.4747 | 0.75
- 0.85 |
1.75
- 2.50 |
0.20
- 0.60 |
1.0
- 1.70 |
19.0
- 21.0 |
0.15
- 0.20 |
|
| ----- | ---- | SUH11 | ---- | 0.45
- 0.55 |
1.00
- 2.00 |
0.60 max. |
0.60 max. |
7.50
- 9.50 |
|
| EV-12 | 21-2N | ---- | 1.4875 | 0.50
- 0.60 |
0.08
- 0.25 |
7.00
- 9.50 |
1.50
- 2.75 |
19.25
- 21.50 |
0.20
- 0.40 |
| EV-8 | 21-4N | SUH35 | 1.4871 | 0.48
- 0.58 |
0.35 max. |
8.00
- 10.00 |
3.25
- 4.50 |
20.00
- 22.00 |
0.35
- 0.45 |
| EV-15 | 23-8N | ---- | ---- | 0.28
- 0.38 |
0.50
- 1.00 |
1.50
- 3.50 |
7.00
- 9.00 |
22.00
- 24.00 |
0.25
- 0.40 |
| EV-4 | 21-12N | SUH37 | ---- | 0.15
- 0.25 |
1.00 max. |
1.00
- 1.60 |
10.00
- 12.00 |
20.50
- 22.50 |
0.15
- 0.30 |
Hard Facing Alloys
| C | Ni | Cr | Fe | W | Co | |
| St # 1 | 2.5 | - | 30.0 | 3.0 | 12.0 | Bal. |
| St # 6 | 1.0 | - | 28.0 | 3.0 | 4.0 | Bal. |
| St # 12 | 1.35 | - | 29.0 | 2.5 | 8.0 | Bal. |
| St # 32 | 1.80 | 22.0 | 26.0 | - | 12.0 | Bal. |
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