O1
Description
This grade gives higher hardness values than THYRODUR 2842 and a better wear-resistance owing to tungstene presence, whereas preserving a good toughness.
Chemical Composition
| C | Si | Mn | Cr | V | W |
|---|---|---|---|---|---|
| 1 | 0.25 | 1.05 | 0.55 | 0.15 | 0.58 |
Standards
| AISI O-1 | 1.2510 | 100MnCrW4 | A681 | 9CrWMn | SKS3 | AFNOR 2212 |
Properties
| Thermal Conductivity at °C | 20 | 350 | 700 |
|---|---|---|---|
| W/(m • K) | 33.8 | 32.2 | 31 |
Applications
- Blanking and stamping dies for cutting sheets
- Threading tools
- Drills
- Broaches
- Gauges
- Measuring tools
- Plastic moulds
- Shear blades
- Guide rails
Heat Treatment
| Soft annealing °C | Cooling | Hardness HB |
|---|---|---|
| 750 - 780 | Furnace | max. 230 |
| Stress-relief annealing °C | Cooling |
|---|---|
| approx. 650 | Furnace |
| Hardening °C | Quenching | Hardness after quenching HRC |
|---|---|---|
| 780 - 820 | Air, oil or saltbath, 180-220 °C | 65 |
| Tempering °C after quenching | 100 | 200 | 300 | 400 |
|---|---|---|---|---|
| HRC | 63 | 62 | 58 | 53.5 |
