• Excellent mechanical properties:

Tensile strength ≥ 1100–1300 MPa, yield strength ≥ 900 MPa, elongation ≥ 10%, impact toughness ≥ 50 J (stable at -40℃).

• High Hardness:

After carburizing and quenching, this steel achieves a surface hardness of 58–62 HRC, a wear-resistant layer depth of 0.8–1.6 mm, while maintaining a core hardness of 30–45 HRC.

• Good Hardenability:

Deep hardening enables larger component sizes.

• Excellent wear resistance:

Chromium and molybdenum promote the formation of hard carbides in the carburized layer, significantly improving surface wear resistance.

• Excellent fatigue resistance:

The uniform, tempered sorbite structure in the core absorbs impact energy, inhibits crack propagation, and increases high-cycle fatigue life by more than 40% compared to ordinary alloy steels, making it suitable for alternating-load environments. 

• Excellent machinability:

Trace amounts of sulfides improve cutting performance, increasing cutting speed by 10–15% compared to ordinary medium carbon steel, with selectable feed rates of 0.12–0.18 mm/rev, and extending tool life by 20–30%.

• Excellent heat-treatment stability:

High-dimensional stability after heat treatment, with a deformation rate of less than 0.05%, makes it suitable for machining precision parts.

• Strong corrosion resistance:

Chromium provides mild corrosion resistance, suitable for water- or oil-containing environments.

• High-temperature adaptability:

The addition of molybdenum enables the steel to maintain stable strength below 400℃, demonstrating creep resistance and adaptability to medium-temperature conditions.