The differences between 12cr1mov steel and 15CrMo steel

Both 12Cr1MoV steel and 15CrMo steel are alloy structural steels. Due to different chemical compositions and various properties, the environmental conditions used are different. A detailed analysis is given below.

1. Differences in chemical composition

12cr1mov steel chemical composition: C: 0.08-0.15 Si: 0.17-0.37 Mn: 0.40-0.70 Cr: 0.90-1.20 V: 0.15-0.30 Mo: 0.25-0.35

15crmo steel chemical composition: 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 carbon content of 12cr1mov steel is lower than 15crmo steel, and the molybdenum content of 12cr1mov steel is lower than 15crmo steel. 15crmo steel has no limit on the content of vanadium, and no vanadium is specially added.

2. Differences in mechanical properties

12cr1mov steel mechanical properties: Tensile strength: ≥490mpa; Yield strength: ≥245mpa; Elongation after fracture: ≥22%; Area shrinkage: ≥50%; Impact energy: ≥71J.

15crmo steel Mechanical properties: Tensile strength: ≥440mpa; Yield strength: ≥295mpa; Elongation after fracture: ≥22%; Area shrinkage: ≥60%; Impact energy: ≥94J.

3. Differences in characteristics and uses

The 12cr1mov steel has the characteristics of similar creep and permanent strength values. It has high plasticity during permanent stretching, and is generally used after normalizing and high-temperature tempering.

12cr1mov steel is used to manufacture superheated steel pipes, conduits, radiator pipes and related forgings in high-pressure equipment whose working temperature does not exceed 570-585 °C.

15crmo steel is a pearlitic heat-resistant steel with high lasting strength, good machinability and cold strain plasticity, and acceptable weldability at temperatures below 500-550 °C. It is generally used in normalizing and high-temperature tempering.

15crmo steel can be used to manufacture boiler superheater, medium and high pressure steam conduit and header, main steam pipe with steam temperature of 510℃, after quenching and tempering, it can be used to manufacture various parts that work at room temperature.

Pre: The treatment method of steel plate rust

Next: Introduction to spiral welded pipes