Steel 38KHGM

Designation

Name The value
Designation GOST Cyrillic 38ХГМ
Designation GOST Latin 38XGM
Transliteration 38HGM
By chemical elements 38CrMnMo

Description

38KHGM steel is used: for the manufacture of toothed wheel transmissions; tools and accessories at the Volga automobile plant by type, used by «FIAT».

Note

Structural steel quality chromatorgraphy.

Standards

Name Code Standards
Bars and shapes В32 GOST 4543-71, GOST 14955-77, TU 14-1-5414-2001, TU 14-1-2118-77, TU 14-11-245-88, TU 14-136-367-2008
Bars and shapes В22 GOST 8319.0-75
Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-4944-90, TU 14-1-904-74
Sheets and strips В33 TU 14-1-518-73

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo W
TU 14-1-518-73 0.34-0.4 ≤0.035 ≤0.035 0.6-0.9 0.8-1.1 0.17-0.37 ≤0.3 Rest - - - 0.15-0.25 -
GOST 4543-71 0.34-0.4 ≤0.035 ≤0.035 0.6-0.9 0.8-1.1 0.17-0.37 ≤0.3 Rest ≤0.3 ≤0.05 ≤0.03 0.15-0.25 ≤0.2
Fe is the basis.
According to GOST 4543-71 the content in high-quality steel is regulated: P≤0,025%; S≤0.025%; Сu≤0.30%; in high-grade steel: P≤0,025%; S≤0.015%; Сu≤0.25%.
According to TU 14-1-518-73, the total content of sulfur and phosphorus in the steel should not be more than 0.060%. In the finished rolled products, if all the requirements of the technical specifications are met, deviations from the chemical composition standards are allowed in accordance with Table 3 of GOST 4543.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % KCU, kJ/m2 HB, MPa
High-quality and sheet hire. Quenching in oil from 870±10 °C + Vacation at 580-620 °C, air cooling
25 ≥785 ≥930 ≥11 ≥785 ≤240

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
HB Brinell hardness number

Technological properties

Name The value
Склонность к отпускной хрупкости Tend not.
Flock-sensitive sensitivity not sensitive.