BÖHLER W302 ISOBLOC is a 5% chromium steel and corresponds to material number 1.2344 (X40CrMoV5-1). Produced via the electroslag remelting process (ESR), this tool steel has very high hot toughness as well as very high hot hardness and a very good resistance against heat-checkings. The combination of these properties makes it a top performer in closed- and open-die forging as well as in high- and low-pressure die casting. In addition, this material has very good polishability and is therefore also often used as a molding material for plastic injection molds.
| High temperture strength | High temperature toughness | High temperature wear resistance |
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| SEL | UNS | EN | AISI | JIS | NADCA |
|---|---|---|---|---|---|
| 1.2344 | T20813 | X40CrMoV5-1 | H13 | SKD61 | B1885 |
| EN ISO | JIS | NADCA |
|---|---|---|
| 4957 | G4404 | #207 |
| C | Si | Mn | Cr | Mo | V | |
|---|---|---|---|---|---|---|
| 0.39 | 0.90 | 0.40 | 5.20 | 1.40 | 0.95 |
Information on Long Products ) Presented data refer exclusivly to long products. Please observe the detailed explanations at the end of the data sheet (pdf).
