Steel AS40KHGNM

Designation

Name The value
Designation GOST Cyrillic АС40ХГНМ
Designation GOST Latin AC40XGHM
Transliteration AS40HGNM
By chemical elements -

Description

AS40KHGNM steel is used: for the manufacture of automotive components (rollers shaft, Pitman arm plunger, chain tensioner pusher actuator fuel pump).

Note

Lead-containing alloy steel high machinability.

Standards

Name Code Standards
Bars and shapes В32 GOST 1414-75, GOST 14955-77, TU 14-1-2217-92
Blanks. Of the workpiece. Slabs В31 TU 14-1-1515-75, TU 14-1-514-73

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Mo Pb
GOST 1414-75 0.37-0.43 ≤0.03 ≤0.035 0.5-0.8 0.6-0.9 0.17-0.37 0.7-1.1 Rest ≤0.3 0.15-0.25 0.15-0.3
Fe is the basis.
According to GOST 1414-75, the total mass fraction of sulfur and phosphorus should not exceed 0.060%.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % KCU, kJ/m2 HB, MPa
Rental of calibrated and improved or normalized
≤35 - - - - 262-300
Bars up to 100 mm Quenching in oil 830-850 °C + Vacation at 580-620 °C, air cooling
25 ≥835 ≥980 ≥12 ≥882 -

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