DIN 1630 ST52.4 seamless steel pipe is high-quality carbon structural steels with low hardness and easy cutting processing. They are commonly used as templates, tips, and guide posts in molds, but they require heat treatment. DIN 1630 ST52.4 The seamless steel pipe with hardness greater than HRC 55 is qualified after quenching without tempering.
After quenching and tempering, the DIN 1630 ST52.4 seamless steel pipe has good comprehensive mechanical properties and is widely used in various important structural parts, especially those connecting rods, bolts, gears and shafts that work under alternating loads. However, DIN 1630 ST52.4 seamless steel pipe has low surface hardness and is not wear-resistant. Can be quenched and tempered + surface quenching to improve the surface hardness of parts.
Cold drawn DIN 1630 ST52.4 seamless steel pipe carburizing treatment is generally used for heavy-duty parts with wear-resistant surfaces and impact-resistant cores, and its wear resistance is higher than quenched and tempered + surface quenching. The surface carbon content of DIN 1630 ST52.4 seamless steel pipe is 0.8-1.2%, and the core is generally 0.1-0.25%. After heat treatment, the surface can obtain high hardness, the core hardness is low and impact resistance.
