Product brief introduction

This steel has high strength, plasticity, toughness and good hardenability. The critical quenched diameter in oil reaches 27.5-43.5mm. The thermal sensitivity during heat treatment is small, and the process properties such as cold drawing, cutting, thread rolling, and tapping are also excellent.

Product Parameter

C：0.37～0.44

Si：0.17～0.37

Mn：1.10～1.40

B：0.0005～0.0035

V：0.05～0.10

S：≤0.035

P：≤0.035

Cu：≤0.30

Cr：≤0.30

Ni：≤0.30

Mo：0.15

Technical Equipment

技术装备