P20

P20

P20 Plastic Mould Steel For Precision Tooling

TSI Metals supplies P20 Plastic Mould Steel for demanding moulding and tooling applications where toughness, polishability, uniform hardness and dimensional stability are important.

P20 is commonly used for plastic injection moulds, compression moulds, die-casting dies, low-pressure mould bases and tooling inserts. Its pre-hardened condition can help reduce the need for additional heat treatment before machining.

Key Properties

  • Pre-Hardened Condition
  • Good Toughness
  • Good Polishability
  • Uniform Hardness
  • Good Dimensional Stability
  • Suitable for Detailed Tooling
  • Good Surface Finish
  • Resistance to Wear and Distortion
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Technical Specifications

Parameter P20 Plastic Mould Steel
Material Type Plastic Mould Steel
Grade P20
Standard / Equivalent 1.2311 / 40CrMnMo7
Application Plastic Moulds & Tooling
Supply Condition Pre-Hardened / Annealed on Request
Hardness HRC 28–32
Available Forms Flats, Round Bars, Blocks
Cutting Horizontal, Vertical & Lateral Bandsaw

Chemical Composition

Element Typical Composition
Carbon (C) 0.40%
Manganese (Mn) 1.50%
Chromium (Cr) 1.90%
Molybdenum (Mo) 0.20%

Applications

4140 is widely used for mechanical and engineering components where strength and toughness are important.

Shafts & Axles
Suitable for shafts and axles exposed to mechanical loads, torque and repeated operating conditions.

Gears & Gear Components
Used for gears and related transmission components requiring strength and wear resistance.

Crankshafts
Suitable for crankshafts and other components subjected to repeated mechanical loads.

Spindles & Couplings
Used for spindles, couplings, and rotating components requiring dependable mechanical performance.

Bolts & Fastener
Suitable for high-strength bolts and other engineering components where increased mechanical strength is required.

Machinery Components
Used across heavy machinery and general engineering applications where toughness and strength are important.

 

Heat Treatment

Pre-Hardened Condition
P20 is commonly supplied in a pre-hardened condition, typically around HRC 28–32, allowing machining and mould manufacturing without additional hardening in many applications.

Annealing
P20 can be supplied annealed when a softer condition is required for machining or subsequent heat treatment.

Hardening & Tempering
Where additional hardness or specific mechanical properties are required, P20 may undergo controlled hardening followed by tempering. Select the exact heat-treatment parameters according to the material specification, section size, and application.

 

Available Forms

  • Flats — Suitable for mould plates and tooling components.
  • Round Bars — Suitable for cylindrical tooling and machined components.
  • Blocks — Suitable for mould bases and larger tooling requirements.
  • Pre-Hardened — Typically supplied at HRC 28–32.
  • Annealed — Available on request.
  • Full Length — Supplied in available dimensions.
  • Cut-to-Size — Cut according to required dimensions.