Steel AS30KHM

Designation

Name The value
Designation GOST Cyrillic АС30ХМ
Designation GOST Latin AC30XM
Transliteration AS30HM
By chemical elements -

Description

AS30KHM steel is used: for the manufacture of automotive parts (steering worm).

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 0.27-0.33 ≤0.035 ≤0.035 0.4-0.7 0.8-1.1 0.17-0.37 ≤0.3 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, % y, % KCU, kJ/m2 HB, MPa
Rental of calibrated and improved
≤35 ≥630 ≥780 ≥12 ≥3.6 - ≤285
Bars up to 100 mm Quenching in oil with 860-880 °C + Vacation at 510-560 °C, air cooling
15 ≥735 ≥880 ≥12 - ≥980 -

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
KCU Toughness
HB Brinell hardness number