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Plastic Mould Steel
Plastic Moulding steel (AISI P-20)
Equivalent Grades. 
American German Japanese China Poland
(W.Nr.) (DIN)
AISI P-20 1.2738 40CrMnNiMo8-6-4 - - -
Chemical Composition (AISI P-20)
C Si Mn P S Cr Mo V W Ni
AISI P-20 0.35-0.45 0.20-0.40 1.30-1.60 - - 1.80-2.10 0.15-0.25 - - 0.90-1.20
AISI P-20

Tempering curve

Steel properties

Good machinability, suitable for chemical etching, better hardenability than THYROPLAST® 2311. Used for all thicknesses Good polishability. Guaranted through hardness: 290 HB or 100 kg/mm2 minimum.

Applications

Plastic moulds of all thicknesses with deep engraving and high through hardness.