Steel 70G

  • 70G steel
  • Steel 60S2HFA
  • Steel 60KhFA (60KhF)
  • Steel 65
  • Steel 65G (65G1)
  • Steel 65GA
  • Steel 65S2VA
  • Steel 68A
  • Steel 68GA
  • Steel 70
  • Steel 60S2HG
  • Steel 70G2
  • Steel 70S2HA (EI142)
  • Steel 70C3A
  • 70KhGFA steel
  • Steel 75
  • Steel 80
  • Steel 85
  • KT-2 steel
  • KT-3 steel
  • Steel 55S2A
  • Steel 3K-7
  • Steel 40P
  • Steel 50RA (50P)
  • 50KhG steel
  • 50KhGA steel
  • 50KhGFA steel
  • Steel 50KhFA (50KhF)
  • 51KhFA steel
  • Steel 55C2
  • Steel 60С2Х (60С2ХА; 60С2ХАA)
  • Steel 55S2GF
  • Steel 55KhGR
  • Steel 55KhFA (55KhF)
  • 60G steel
  • Steel 60C2
  • Steel 60S2A
  • Steel 60S2G
  • Steel 60C2H2A

    • Designation

    Name The value
    Designation GOST Cyrillic 70Г
    Designation GOST Latin 70G
    Transliteration 70G
    By chemical elements 70Mn

    Description

    Steel 70G used: for the manufacture of springs of different machines and mechanisms in various industries; knives earthmoving machinery (bulldozers, scrapers, graders and graders, as well as to the dozer and grader blades equipment excavators, rollers and other earth moving machines); measuring tapes; quenched and tempered carded a round wire and shaped steel used for the manufacture of brackets needle products.

    Note

    Steel spring alloy.

    Standards

    Name Code Standards
    Bars and shapes В32 GOST 14959-79, TU 14-1-2118-77, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008
    Sheets and strips В33 GOST 1577-93, TU 14-1-2004-77, TU 14-1-2946-80, TU 14-1-4118-86, TU 14-1-4118-2004
    Tape В34 GOST 2283-79
    Low carbon steel wire В71 GOST 3875-83
    Sheets and strips В23 GOST 82-70
    Bars and shapes В22 GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 9234-74, GOST 11474-76, GOST 17152-89
    Steel wire medium and high carbon В72 GOST 9389-75, GOST 26366-84

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu
    GOST 14959-79 0.67-0.75 ≤0.035 ≤0.035 0.9-1.2 ≤0.25 0.17-0.37 0.25 Rest ≤0.2
    GOST 17152-89 (ИСО 7129-82 0.67-0.75 ≤0.035 ≤0.035 0.9-1.2 ≤0.25 0.17-0.37 0.25 Rest ≤0.2
    Fe is the basis.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % d4 d10 y, %
    Carden wire 0.2-0.8 mm as supplied by GOST 3875-83 (samples)
    - - 2160-2350 - - - -
    - - 2351-2550 - - - -
    Cold-rolled steel strip of 0.1-4.0 mm according to GOST 2283-79 on delivery
    0.1-4 - 740-1180 - - - -
    0.1-1.5 - ≤640 - ≥15 - -
    1.5-4 - ≤740 - ≥10 - -
    1.5-4 - ≤640 - ≥10 - -
    Flats on the other 14-1-4118-2004
    - 640-880 - ≥8 ≥10 -
    Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Hardened in oil from 830 °C to + vacation at 470 °C
    ≥835 ≥1030 ≥7 - - ≥25

    Description mechanical marks

    Name Description
    sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
    σU Limit short-term strength
    d5 Elongation after rupture
    d4 Elongation after rupture
    d10 Elongation after rupture
    y The relative narrowing