What is the mechanical properties of 15CrMo steel?

GB/T3077 15CrMo grade is a heat-resistant low alloy steel material. Under high temperature conditions, this steel has high thermal strength (δb≥440MPa) and oxidation resistance, and has certain resistance to hydrogen corrosion. Due to the high content of Cr, C and other alloying elements in the steel, the hardening tendency of 15CrMo steel is obvious and the weldability is poor.

15CrMo mechanical properties of a range of values:

Yield strength σ0.2 (MPa): ≥295

Tensile strength: δbMPa ≥440

Elongation δ5%: ≥22

Hardness: ≤179HB

15CrMo steel is stronger than 12CrMo steel, toughness slightly lower, at 500-550 ° C or less have a higher heat resistance and oxidation resistance. This material has good mechanical properties, machinability and cold strain plasticity good weldability fair. 15CrMo is mainly used for the production of various caliber seamless steel pipe and sheet. After quenching and tempering, at room temperature can be used to manufacture a variety of important parts of the work.