The difference between 42CrMo steel and 42CrMoA steel

The difference between 42CrMo steel and 42CrMoA steel - Different characteristics
42CrMo steel: with good mechanical properties and machinability, 42CrMo steel has wide application.

2. 42CrMoA steel: it has high strength and toughness, good hardenability, no obvious tempering brittleness, high fatigue limit and multiple impact resistance after quenching and tempering, and good low-temperature impact toughness. 42CrMoA steel is suitable for manufacturing large and medium-sized plastic moulds with certain strength and toughness.

The difference between 42CrMo steel and 42CrMoA steel - Different applications
1. 42CrMo steel: there are mainly two types of 42CrMo steel materials: 42CrMo steel plate and 42CrMo round bar, in which the 42CrMo steel plate is used for the processing and production of mold, and the 42CrMo round bar is used for the direct machining of parts, which has been recognized by the industry.
2. 42CrMoA steel: the steel is suitable for manufacturing large and medium-sized plastic moulds with certain strength and toughness.

The difference between 42CrMo steel and 42CrMoA steel - Different chemical composition
1. 42CrMo steel: carbon C 0.38-0.45%; silicon Si 0.17-0.37%; manganese Mn 0.50-0.80%; sulfur S allowed residual content ≤ 0.035%; phosphorus P allowed residual content ≤ 0.035%; chromium Cr 0.90-1.20%; nickel Ni allowed residual content ≤ 0.30%; copper Cu allowed residual content ≤ 0.30%; molybdenum Mo 0.15-0.25%.
2、42CrMoA steel: C0.38~0.45，Si 0.17~0.37，Mn 0.50~0.80，Cr 0.90~1.20，Mo 0.15~0.2.