42CrMoA Hot Rolled Alloy Steel

42CrMoA alloy steel is a high-quality steel grade of 42CrMo. While retaining the excellent hardenability, high strength, and good toughness of 42CrMo, 42CrMoA alloy steel significantly improves the material's toughness (especially impact toughness), plasticity, fatigue properties, fracture toughness, and overall reliability through stricter control of sulfur and phosphorus content, increased purity, and enhanced testing. 42CrMoA steel under the GB/T 3077 standard.

42CrMoA alloy structural steel is a chromium-molybdenum alloy steel that offers a balanced combination of strength and ductility after heat treatment. Its composition includes critical alloying elements like chromium and molybdenum, which enhance hardenability and resistance to wear and corrosion.  this material is ideal for manufacturing heavy-duty components subjected to high stress and dynamic loads. 

Size ranges: 
Round Bars**: Diameter ranging from 10 mm to 500 mm.
Steel Plates: Thickness from 10 mm to 200 mm, width up to 2500 mm.
Forgings: Custom sizes based on application, often up to several tons in weight.
Seamless Tubes: Outer diameter from 20 mm to 300 mm, wall thickness as per requirement.

Chemical Composition of 42CrMoA Alloy Steel

The chemical makeup of 42CrMoA ensures its robust performance.

Mechanical Properties of 42CrMoA Alloy Steel

The mechanical properties of 42CrMoA make it suitable for high-stress applications. These properties are typically measured after quenching and tempering:

Equivalent Grades of 42CrMoA Alloy Steel

42CrMoA alloy steel has comparable grades in international standards, making it easier to source alternatives globally.