BÖHLER S390 MICROCLEAN – "The decathlete" This class is our PM steel with many positive usage properties. For spiral drill bits, taps, mills, broaches, or cold-work applications, BÖHLER S390 MICROCLEAN is always a high performer.
| Compressive strength | Grindability | Through hardenable | Toughness | Wear resistance |
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| C | Si | Mn | Cr | Mo | V | W | Co | |
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| 1.64 | 0.60 | 0.30 | 4.80 | 2.00 | 4.80 | 10.40 | 8.00 |
