Steel 12Г2СМФ

Designation

Name The value
Designation GOST Cyrillic 12Г2СМФ
Designation GOST Latin 12G2CMF
Transliteration 12G2SMF
By chemical elements 12Mn2СMoV

Description

Steel 12Г2СМФ used: to manufacture the welded metal structures; superstructures of railway bridges.

Standards

Name Code Standards
Sheets and strips В23 GOST 19903-74, GOST 19903-90, TU 14-1-1308-75
Welding and cutting metals. Soldering, riveting В05 OST 36-58-81

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Mo
TU 14-1-1308-75 0.09-0.15 ≤0.035 ≤0.035 1.3-1.7 ≤0.3 0.4-0.7 ≤0.3 Rest ≤0.3 0.07-0.15 0.15-0.25
Fe is the basis.
It is allowed to increase the viscosity by introducing into the steel 0.05-0.10% aluminum and 0.015-0.030% nitrogen. In this case, the steel is designated 12Г2СМФАЮ.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % KCU, kJ/m2
Rolled sheet. Hardening + vacation
10-36 685 590 14 340

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
KCU Toughness

Technological properties

Name The value
Weldability without restrictions