Vacuum remelted hot work tool steel with a good temper resistance, but tougher than W403.
| High temperture strength | High temperature toughness | High temperature wear resistance | Machinability supplied |
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| DIN | UNS | EN | Others |
|---|---|---|---|
| ~ 1.2343 | ~ T20811 | ~ X37CrMoV5-1 | AISI: ~ H11 |
| C | Si | Mn | Cr | Mo | V | |
|---|---|---|---|---|---|---|
| 0.37 | 0.20 | 0.30 | 5.00 | 1.30 | 0.50 |
