1.2738; 40CrMnNiMo8-6-4

Steel heat treated to ca. 340–380 HB hardness, good machinability, suitable for texturing, good polishability, high through-hardenability due to the nickel content.

Applications:

Large plastic moulds, heavily loaded at the core, tools for hydroforming.

Chemical composition

Element C Si Mn P S Cr Mo Ni
min 0.35 0.20 1.30 max max 1.80 0.15 0.90
max 0.45 0.40 1.60 0.03 0.03 2.10 0.25 1.20

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Equivalents

Wr.Nr. PN EN GOST AISI
1.2738 – 40CrMnNiMo8-6-4 – P20+Ni

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