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Plastic mould steel-P20

Equivalent grades GB  DIN  AISI  JIS  -
3Cr2Mo 1.2311 P20 - -
Chemical Composition C Si Mn Cr P S Mo Ni - -
0.35-0.45 0.20-0.40 1.30-1.60 1.80-2.10 ≤0.030 ≤0.035 0.15-0.25 - - -
Available size Round Bar Diameter Length
60-800mm 2000-6000mm
Flat Bar Thickness Width Length
25-400mm 200-800mm 2000-6000mm
Smelting&shaping EF/ ESR+ hot forged/ hot rolled
Surface condition Black surface/ Grinded/ Machined
Annealed hardness 50-54 HRC   
Characteristics good toughness properties, easy to machine, better polishability than 1.2312,
dimensional stability flame hardenable, good photoengraving properties
Applications Plastic moulds,frames for plastic pressure dies,hydroforming tools
Heat Treatment Annealing Heat to 720÷750°Cfor 2÷4 h furnace cool.  
Stress relieving Up to 560÷600°C, hold for 2÷4h; furnace or still air cooling.
Tempering To be carried out after hardening in the range 580÷650°C for 25mm of thickness minimum 2h.

Plastic mould steel-P20
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