Steel 7ХНМ

Designation

Name The value
Designation GOST Cyrillic 7ХНМ
Designation GOST Latin 7XHM
Transliteration 7HNM
By chemical elements 7CrНMo

Description

7ХНМ steel is used: for the production of billets (slabs) and cold-rolled strip used in the manufacture of various cutting tools and knives.

Note

Steel argon-slag remelting.

Standards

Name Code Standards
Blanks. Of the workpiece. Slabs В31 TU 14-1-3879-84
Tape В34 TU 3-903-79, TU 14-4-1531-88

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Mo
TU 14-1-3879-84 0.63-0.7 ≤0.012 ≤0.015 0.3-0.6 0.5-0.8 0.15-0.35 0.5-0.8 Rest ≤0.3 0.1-0.2
TU 14-4-1531-88 0.63-0.7 ≤0.01 ≤0.02 0.3-0.6 0.5-0.8 0.15-0.35 0.5-0.8 Rest - 0.1-0.2
Fe is the basis.
According to TU 14-1-3879-84, the chemical composition is presented for 7HNM grade argon-slag refining (treated with synthetic slag with argon purge in the ladle). Deviations in chemical composition are allowed in accordance with GOST 5950, phosphorus tolerance +0.0030%.