Feature
High temperature with high rupture strength and creep strength, good low temperature impact toughness, hardenability well without overheating tendencies, deformation hardening is small, when the cold side of the plastic form acceptable processability medium. Poor welding, preheating before welding required, and the elimination of post-weld heat treatment stress, generally used after quenching, but also in the high-frequency surface hardening or quenching and low tempering temperature before use.