P-20 1.2711 HH plastic moulding Steel
P-20 1.2711 HH plastic moulding Steel
Specification
Pre hardened plastic mould steel, hardness as delivered condition 370-410 HB increased compressive strength in comparison to 1.2738, good polishability.
Application
plastic moulds with increased demands on compression strength and wear resistance.
Chemical Analysis %
| C | Mn | Cr | Si | Mo | P | S | NI | V |
|---|---|---|---|---|---|---|---|---|
| 0.50-0.60 | 0.50-0.80 | 0.60-0.80 | 0.15-0.35 | 0.25-0.35 | 0.025 MAX | 0.035 MAX | 1.50-1.80 | 0.07-0.12 |
Delivery condition
Pre hardened Hardness 360-410 HB
Heat Treatment
Pre hardened Hardness 360-410 HB
Heat Treatment
| Soft Annealing | Cooling | Hardness | Hardening | Quenching | Hardness after quenching HRC |
|---|---|---|---|---|---|
| 650-700°C | Furnace | 240 MAX | 830-870°C | AIR, Oil 590-650°C | 57 HRC |
Tempering °C
| Tempering°C | 100 | 200 | 300 | 400 | 500 | 600 |
|---|---|---|---|---|---|---|
| HRC | 56 | 54 | 51 | 47 | 42 | 36 |