Steel 50KHGFA

Designation

Name The value
Designation GOST Cyrillic 50ХГФА
Designation GOST Latin 50XGFA
Transliteration 50HGFA
By chemical elements 50CrMnV

Description

50KHGFA steel is used: for the manufacture of springs critical purpose of the springs of the vehicles.

Note

Steel spring alloy of high quality.

Standards

Name Code Standards
Bars and shapes В32 GOST 14959-79, TU 14-1-2118-77, TU 14-1-440-72, TU 14-11-245-88, TU 14-136-367-2008
Steel wire medium and high carbon В72 GOST 26366-84
Tape В34 TU 14-101-134-2002, TU 1231-039-07528141-2002, TU 1231-037-07528141-2002, TU 1231-052-07528141-2004

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V
GOST 14959-79 0.48-0.55 ≤0.025 ≤0.025 0.8-1 0.95-1.2 0.17-0.37 ≤0.25 Rest ≤0.2 0.15-0.25
Fe is the basis.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, %
Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Quenching in oil from 850 °C + Vacation at 470 °C
≥1325 ≥1420 ≥6 ≥35

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
y The relative narrowing

Technological properties

Name The value
Weldability does not apply to welded structures
Склонность к отпускной хрупкости malosana
Flock-sensitive sensitivity not sensitive