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P20S P20+S Tool Steel
P20S P20+S tool steel suppliers and stockholders delivering to the whole of the Middle East. Nifty Alloys LLC are stockholders and suppliers of P20S steel round bar, flat bar and plate. P20+S is a high tensile alloy tool steel grade supplied in the hardened and tempered condition. With its higher sulphur content it offer better machinability than P20 plastic mould tool steel grade.
Related Specifications
AISI ASTM A681 DIN 17350 BS EN ISO 4957
Applications
Typical Analysis
Forging
Stress Relieving
Annealing
Hardening
Tampering
Applications
Tool steel P20+S is ideally suited for the production of moulds where improved machinability is required. Typical applications include bolsters and injection moulds, die holders and zinc die casting dies. P20S is a versatile plastic mould tool steel with high tensile characteristics suitable for many other applications such as shafts and wear strips
Typical Analysis
| Carbon | 0.35-0.45% | Chromium | 1.80-2.00% |
| Manganese | 1.40-1.60% | Molybdenum | 0.15-0.25% |
| Sulphur | 0.05-0.10% | Silicon | 0.30-0.50% |
| Phosphorous | 0.03% max |
Forging
Heat the P20S component slowly, allow sufficient time for the steel to become heated through. Begin to forge at 1050°C. Do not forge below 930°C reheating if necessary. After forging, cool very slowly.
Stress Relieving
When dies made from P20S are heavily machined, we recommend stabilising the steel just before finish machining in order to relieve machining strains. Heat up to 460-500°C, soak well and cool in air.
Annealing
Heat uniformly to 710-740°C. Soak well, cool slowly in the furnace.
Hardening
Heat uniformly to 830-870°C until heated through. Quench in oil.
Tampering
When tempering P20S heat the steel uniformly, soaking at the tempering temperature for at least one hour per 25mm of section. Allow to cool in still air.
| Temperature [°C] | 100 | 200 | 300 | 400 | 500 | 600 |
| Hardness [HRc] | 51 | 50 | 48 | 46 | 42 | 36 |
| Tensile [N/mm²] | 1730 | 1670 | 1570 | 1480 | 1330 | 1140 |
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