P20 Tool Steel
P20 Tool Steel
Form of Supply
We as the of suppliers of P20 tool steel round bar, flat bar and plate. Diameters in P20 can be sawn to your required lengths as one offs or multiple cut pieces. Rectangular pieces can be sawn from flat bar or plate to your specific sizes. P20 ground tool steel bar can be supplied, providing a quality precision ground bar to tight tolerances.
Forging
P20 tool steel is ideally suited for the production of plastic moulds. Typical applications include die holders, zinc die casting dies, backers, bolsters and injection moulds. The versatility of P20 tool steel with its high tensile characteristics enables uses for a variety of other applications such as shafts, rails and wear strips
Annealing
Heat uniformly to 770-790° C. Soak well, cool slowly in the furnace.
Stress Relieving
When dies are heavily machined, we recommend stabilising just before finish machining in order to relieve machining strains. Heat to 460-500° C. Soak well and allow to cool in the air.
Hardening
Heat the steel uniformly to 820-840° C until heated through. Quench in oil.
Carburising / Case Hardening
Tools produced from may be case hardened, which can achieve a surface hardness of 55 to 59 HRC.
Tufftriding
At 570º C tufftriding of P20 tool steel will give a surface hardness of approximately 700HV. Allowing two hours treatment the surface hard layer will be approximately 0.1mm.
Hard Chromium Plating
To avoid hydrogen embrittlement P20 should be tempered for 4 hours at 180° C for 4 hours after hard
Chromium plating.
Flame / Induction Hardening
Flame or induction hardening of P20 will achieve a hardness of 50 to 55HRC. Air cooling is preferable, though smaller components may require forced cooling. Temper immediately after hardening.
Heat Treatment
Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each P20 steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of P20 tool steel.
Quality Assured Supply
P20 tool steel is supplied in accordance with our ISO 9001: 2008 registration.
| P20 Tool Steel Chemical Composition: |
||||||
| C | Si | Mn | Cr | Mo | P | S |
| 0.28-0.40 | 0.20-0.80 | 0.60-1.00 | 1.40-2.00 | 0.30-0.55 | ≤0.030 | ≤0.030 |
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