| P20 | DIN 2311 | AISI P20 | AFNOR Z210CW12-01 |
| C 0.38 | Mn 1.40 | Cr 1.85 | Mn 0.20 |
P20 is the Pre Hardened Plastic mould steel hardness distributed evenly in large cross sections that have excellent weldability with least hardness elevation, good mirror polishability and less streak texture making finishing easier. Size Section availability upto 255mm thickness. Supply hardness is 240-280 BHN.
| Coefficient of thermal expansionat °C | 20-100 | 20-150 | 20-200 | 20-250 | 20-300 | 20-350 | 20-400 | 20-450 | 20-500 |
| 10-6 m/(m*K) | 12.7 | 12.8 | 13.1 | 13.3 | 13.6 | 13.7 | 13.8 | 14.0 | 14.3 |
| Thermal Conductivity at °C | 23 | 150 | 300 | 350 | 400 | 500 |
| W/(m*K) | 32.0 | 32.8 | 31.4 | 30.2 | 29.6 | 27.5 |
Plastic mould steel equivalent to DIN 2311 use for die holders, zinc die, casting dies, backers, bolsters, injection moulds, mould frames for plastic moulds, Shoe Blocks, pressure casting moulds, recipient sleeves Etc.
| Soft annealing °C | Cooling | Hardness HB |
|---|---|---|
| 710 – 740 | Furnace | max. 235 |
| Hardening °C | Quenching | Hardness after quenching HRC |
|---|---|---|
| 850 – 880 | Oil or saltbath, 180 – 220 °C | 52 |
| Tempering °C after Quenching | 100 | 200 | 300 | 400 | 500 | 600 | 700 |
| HRC | 52 | 50.5 | 48.5 | 46 | 42 | 36.5 | 28 |