Steel 3K-7

Designation

Name The value
Designation GOST Cyrillic 3К-7
Designation GOST Latin 3K-7
Transliteration 3K-7
By chemical elements 3Co-7

Description

Steel 3K-7 applies: for the production of cold drawn wire used for the manufacture of springs are wound in the cold state and not subjected to hardening.

Standards

Name Code Standards
Steel wire medium and high carbon В72 GOST 9389-75

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 9389-75 0.68-0.76 ≤0.03 ≤0.02 0.5-0.8 ≤0.05 0.17-0.37 ≤0.05 Rest ≤0.04
Fe is the basis.