Steel AS12KHN

Designation

Name The value
Designation GOST Cyrillic АС12ХН
Designation GOST Latin AC12XH
Transliteration AS12HN
By chemical elements -

Description

AS12KHN steel is used: for the manufacture of automotive components (levers gear shift ratchet crank shaft, flange, oil pumps, rods, nuts, couplers).

Note

Lead-containing alloy steel high machinability.

Standards

Name Code Standards
Bars and shapes В32 GOST 1414-75, GOST 14955-77
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 Pb
GOST 1414-75 0.09-0.15 ≤0.035 ≤0.035 0.3-0.6 0.4-0.7 0.17-0.37 0.5-0.8 Rest ≤0.3 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
Bars up to 100 mm. Quenching in water from 900-920 °C + Vacation at 150-180 °C, air cooling
15 ≥590 ≥780 ≥8 ≥686
Bars up to 100 mm Quenching in oil from 900-920 °C + Vacation at 150-180 °C, air cooling
15 ≥440 ≥640 ≥10 ≥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