Steel 12ГН2МФАЮ

Designation

Name The value
Designation GOST Cyrillic 12ГН2МФАЮ
Designation GOST Latin 12GH2MFAJu
Transliteration 12GN2MFAYu
By chemical elements 12MnН2MoVNAl

Description

12ГН2МФАЮ steel is used: for the manufacture of metal span structures of large bridges; parts of pressure pipeline HPP; parts of excavators.

Standards

Name Code Standards
Sheets and strips В33 TU 14-1-5241-93

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu N As Al V Mo
TU 14-1-5241-93 0.09-0.16 ≤0.035 ≤0.035 0.9-1.3 ≤0.5 0.4-0.6 1.4-1.7 Rest ≤0.3 0.02-0.03 ≤0.03 0.05-0.01 0.05-0.1 0.1-0.25
Fe is the basis.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % KCU, kJ/m2
Rolled plates as supplied by TU 14-1-5241-93. Quenching + Tempering (samples transverse, KCU-70 °C)
10-40 590-785 690-880 ≥14 ≥294

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.