E M7

E M7 is a molybdenum-alloyed grade with some vanadium in order to increase the wear resistance.

Datasheet :

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Chemical composition

C Cr Mo W Co V
1.02 3.8 8.6 1.8 - 1.9

Standards

  • Europe : HS 2-9-2
  • Sweden : SS2782
  • Japan : JIS SKH58
  • Germany : 1.3348
  • USA : AISI M7

Properties

Machinability

Wear Resistance

Toughness

Hot hardness

Grindability

Heat treatment

Delivered Hardness

  • Soft annealed : 250 HB
  • Cold drawn : 275 HB
  • Cold rolled : 275 HB

Characteristics

E M7 can be worked as follows:

  • machining (grinding, turning, milling)
  • polishing
  • hot forming
  • electrical discharge machining
  • welding (special procedure including preheating and filler materials of base material composition).

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