Steel АЦ45Г2

Designation

Name The value
Designation GOST Cyrillic АЦ45Г2
Designation GOST Latin ATs45G2
Transliteration ATs45G2
By chemical elements -

Description

АЦ45Г2 steel is used: for the production of bars intended for the manufacture of automotive components by hot forming with subsequent machining.

Note

Calcium-containing steel of high machinability.

Standards

Name Code Standards
Bars and shapes В32 TU 14-1-3283-81

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Ca
TU 14-1-3283-81 0.41-0.49 0.035-0.06 0.035 1.4-1.8 ≤0.3 0.17-0.37 ≤0.3 Rest ≤0.3 0.03-0.09
Fe is the basis.
According to TU 14-1-3283-81 chemical analysis is given for steel grade AC45G2. In the designation of steel letters mean: A - automatic, C - calcium. The microalloying of calcium steel is carried out by silicocalcium and other calcium alloys at the rate of introduction of 0.030-0.090% calcium into a liquid metal. The mass fraction of calcium is not determined by chemical analysis. The presence of tungsten to 0.20%, molybdenum to 0.15%, titanium to 0.030% and vanadium to 0.050% is not a defect. In the finished bars, subject to the requirements of the technical specification, deviations in chemical composition are allowed: for carbon ± 0.010%, for manganese ± 0.050%, for silicon ± 0.020%, for chromium ± 0.020%, for nickel -0.050%, for sulfur and phosphorus + 0.0050% of each.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, %
Bars on the other 14-1-3283-81
Образец 25х25 ≥400 ≥690 ≥11 ≥40

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
Particularities of production of goods Bars on the other 14-1-3283-81 are supplied with heat treatment (after annealing or high tempering), hardness ≤229НВ.