PM823 steel
Steel PM823:
high toughness and hardenability
What?
PM823: cold work tool steel with high vanadium content. Good tempering ability, high strength.
Material properties
- High toughness.
- Good hardenability.
Application
- Shear blades.
- Cutting tools.
- Guide and profiled rollers with high requirements in terms of toughness and wear resistance.
Physical properties of PM823
| Temperature in °C | 20-100 | 20-200 | 20-400 |
|---|---|---|---|
| Thermal expansion in 10-6m/m x K | 11.3 | 12.2 | 12.7 |
| Temperature in °C | 20 | ||
| Thermal conductivity in W/m x K | 24.8 |
Heat treatment
| Soft annealing | Temperature: 800 – 840 °C, 4 – 6 hrs |
|---|---|
| Cooling: slow furnace cooling | |
| Hardness: max. 280 HB | |
| Hardening | Temperature: 1070 – 1090 °C |
| Cooling Oil or polymer quenching, warm bath of 540 °C | |
| Tempering | Temperature: 530 – 600 °C |
| Hardness: see tempering curve |
