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Hot Work Tool Steel (AISI H-21) |
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| Equivalent Grades. |
American |
German |
Japanese |
China |
Poland |
(W.Nr.) |
(DIN) |
AISI H-21 |
1.2581 |
X30WCrV9-3 |
SKD-5 |
3Cr2W8V |
WWV |
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Chemical Composition (AISI H-21) |
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|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
W |
|
0.30-0.40 |
0.15-0.30 |
0.20-0.40 |
- |
- |
3.00-3.75 |
2.00-3.00 |
0.30-0.50 |
8.75-10 |
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AISI H-21 |
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Steel properties |
| Hot working steel, alloyed with tungsten giving high red strength Suitable for all types of nitriding. |
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| Applications |
| Hot drawing dies, pressure casting moulds for heavy metals, small die inserts, deburring plates. |
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| Heat treatment |
Hardening from |
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1100-1150°C |
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| In |
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Oil, vacuum,or hot bath
at 500-550°C
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Tempering curve :-
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