AISI M-42
Description
DIN 1.3247 / M42 is a Cobalt-Molybdenum high speed steel according to DIN standard. The 1.3247 steel can reach high hardness of 70HRC after Quenching and Tempering. 1.3247 tool steel has good red hardness and high temperature hardness. Cutting tools made of 1.3247 steel can be used to cut high temperature iron base and casting alloys. This steel has poor toughness,so the quenching temperature should be low.
Equivalent Grades |
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| American | German | Japanese | China | Poland | |
|---|---|---|---|---|---|
| (W.Nr) | (DIN) | ||||
| AISI M-42 | 1.3247 | HS2-10-1-8 | SKH59 | W2Mo9Cr4VCo8 | SK8M |
Chemical Composition (AISI M-42) |
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| C | Si | Mn | P | S | Cr | Mo | V | W | Co | Ni | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AISI M-42 | |||||||||||
Properties
- High wear resistance
- High red hardness
- High toughness
- As a result of its low vanadium content this grade exhibits good grindability
- Fine Grain Size and Carbide Particle Size
Applications
1.Die Sinking Cutters
2.Milling Cutters
3.Engraving Machines
4.Tool Bits
5.Cold Extrusion Rams
6.Hobs
7.Precision Broach
8.Lathe Tools
Heat Treatment
Tempreing Curve:
Temperature - Transformation - Diagram: 
Temperature - Transformation - Diagram: