P20-Steel
- Din 1.2311
- Din 1.2738
- Din 1.2316
- P20 : 28-32 HRC
- P20HH: 38-40 HRC
- Thickness:20mm-50mm
- Width :20mm-2mts
- Length:20mm – 5mts
- Carbon:0.4%
- Nickel:1%
- Chromium:2%
P20 Steel is available in round and flat form.
P20 Steel is mainly used in
Plastic moulds
Backers
Bolsters
Injection moulds
Rubber moulds
Rails
wear strips
Carbon | 0.40% | Silicon | 0.40% |
Manganese | 1.00% | Chromium | 1.20% |
Molybdenum | 0.35% |
P20 Steel is heated slowly and forged at1050°C( not below 930°C). Then it is cooled slowly.
P20 Steel is heated uniformly at a temperature of 770-790°C , then soaked well and cooled down slowly in furnace.
P20 Steel is heated to 460-500°C, then soaked well and cooled in air.In order to relieve machine strains,stabilizing is recommended before finishing the machining,in parts where dies have to be heavily machined.
Uniformly P20 Steel is heated to 820-840°C and then oil quenched.
Uniform heating and soaking at tempering temperature is needed for minimum 1hour/25mm of section. Then it is cooled in still air.
Temperature | Time | Approx. Depth of Case |
---|---|---|
525ºC | 20 hours | 0.30mm |
525ºC | 40 hours | 0.35mm |
525ºC | 60 hours | 0.50mm |
P20 tool steel can have a 55-59HRC surface hardness.
700HV surface hardness can e attained by tuffriding at 570ºC.
After this process, tempering at 180°C for 4hours is required,thus prevents hydrogen emrittlement.
P20 attains 50-55HRC hardness after induction/flame hardening. Immediate tempering is required after hardening.P20 steel then needs to be air cooled.
It varies according to the shape and size of P20 steel. P20 steel is heated to 871-899 ºC in carburizing medium. After carburization, P20 is heated to 816-871 ºC , then hold on for 15minutes. After this, oil quenching is done.
Chemical Composition of all are Plastics moulds steel series will match as per international standards, Please request for the certificate before placing the order.
With our material,we provide mill test certificate and ultrasonic Ok certificate (Note: Provide only if mentioned before placing the order.)