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Grade Introduction:
P20+S steel have good cutting properties, usual use plastic mold, Injection molding and die mold. The P20+S steel materials delivery condition as per different customer requirements, usual delivery condition as Pre-hardness, hardness 28-34 HRc. Saaj steel is professional AISI P20S tool steel supplier, Inventory and manufacturer.
Grade Application:
Tool steel P20 + S is suitable for mold production, improve the machining performance is required. Typical applications include support and injection mold, mold holders and zinc die casting mold. P20S is a versatile plastic mold and the characteristics of high strength steel is applicable to many other applications, such as axis and wear a belt.
Equivalent grades:
P20+S is an high alloy Chrome Cold work tool steel. ASTM A681 AISI P20 steel standards and steel grades equivalent as below:
  • BS BP20S
  • ASTMA681
  • GB 3Cr2MoS
  • DIN 40CrMnMoS8-6
  • W-Nr 1.2312
  • UNS T51620S
Addition to other grades:
MS, EN1a, EN3b, EN8, EN8d, EN9, EN19, EN24, EN31, EN32b, EN36c, EN41b, EN43b, EN47, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, OHNS, M2, M35, M42, 2714, SKD-11, P20, P20+Ni, SCM 420, ASTM Sa-36, ASTM SA-105, SAE 1018, SAE 1020, SAE 4140, SAE 8620, 16MNCR5, 20MNCR5, C20, C35, C40, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.
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Chemical composition:
The following table shows the chemical composition of P20+S steel:
0.030 Max
Mechanical Properties:
AISI P20+S Steel Mechanical Properties
  • Poisson’s ratio 0.27-0.30
  • Izod impact unnotched 28.0 J
  • Elastic modulus 190-210GPa
Heat treatment:
Heat treatment temperatures, including rate of heat, cool and soak times will vary due to factors such as the shape and size of each steel component. Please consult your heat treatment provider for full guidance on heat treatment of tool steel P20+S.
830-870°C, quenching in oil.
Heat to tempering temperature, then cool in air.
Physical Properties:
Thermal Properties:
Thermal expansion: 12 x 10-6/ºC, 20-100°C
Forging Properties:
Slowly heat P20+S to 1050°Cstart forging, ensure forging temperature no lower than 930°C.
Stress Reliving:
When dies made from P20+S are heavily machined, we recommend stabilizing the steel just before finish machining in order to relieve machining strains. Heat up to 460-500°C, soak well and cool in air.
Heat to 710-740°C.  Soak enough time, ensure heat thoroughly, then cool in the furnace slowly.
Density: 7.85kg/cm3.
Machine ability:
Supply Cities:
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