Steel АЦ45Г2

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.