C8
C8 is a conventionally manufactured cobalt -alloyed high speed steel, characterised by a high resistance to high temperatures, and a very high hardness.
Chemical composition
| C | Cr | Mo | W | Co | V |
|---|---|---|---|---|---|
| 1.05 | 4.0 | 6.0 | 5.0 | 7.8 | 1.6 |
Standards
- Europe : HS 5-6-2-8
Properties
Machinability
Wear Resistance
Toughness
Hot hardness
Grindability
Heat treatment
Delivered Hardness
- Soft annealed : 270 HB
- Cold drawn : 295 HB
- Cold rolled : 295 HB
Characteristics
C8 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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