What material is 15CrMo steel

15CrMo steel is alloy structural steel, belonging to pearlite Heat-resistant steel. It has high endurance strength below 500-550℃, good workability and cold strain plasticity, and acceptable weldability (preheating to 300℃ before welding and heat treatment after welding). 15CrMo steel is generally used in normalizing and high temperature tempering.

The chemical composition of 15CrMo steel is as follows:
C 0.12～0.18%；Si 0.17～0.37%；Mn 0.40～0.70%；Cr 0.80～1.10%；Mo 0.40～0.55%.

The mechanical properties of 15CrMo steel are as follows:
Tensile strength: 440 MPa; yield strength: 295 MPa; elongation after fracture: 22%; shrinkage after fracture: 60%; impact absorption energy: 94J.

15CrMo steel application:
After normalizing and tempering, 15CrMo steel can be used to manufacture boiler superheater, medium and high pressure steam pipes and headers with steam temperature up to 510℃, and main steam pipes with steam temperature up to 510℃. After quenching and tempering, they can be used to manufacture various important parts working at normal temperature.