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

American German Japanese China Poland
  (W.Nr) (DIN)      
AISI M-42 1.3247HS2-10-1-8SKH59W2Mo9Cr4VCo8SK8M

Chemical Composition (AISI M-42)

  C Si Mn P S Cr Mo V W Co Ni
AISI M-42

Properties

  1. High wear resistance
  2. High red hardness 
  3. High toughness 
  4. As a result of its low vanadium content this grade exhibits good grindability
  5. 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: