E M4
M4 is a vanadium based grade used for cold work applications.
Chemical composition
| C | Cr | Mo | W | Co | V |
|---|---|---|---|---|---|
| 1.30 | 4.2 | 4.5 | 5.6 | - | 4.0 |
Standards
- Europe : HS 6-5-4
- Japan : JIS SKH54
- Germany : 1.3351
- USA : AISI M4
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 M4 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).
Applications
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Round bars Ø 0.6 to 410 mm
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