The application of 20Cr alloy steel

20Cr alloy steel is low hardenability carburizing steel.

20Cr steel is mostly used to make carburized parts (oil quenching) with high core strength requirements, surface wear, cross-section below 30mm or disordered shape and low load (oil quenching), such as machine tool gearbox gears, gear shafts, cams, worm, piston pin, claw clutch, etc.

For parts with small heat treatment deformation and high wear resistance, high-frequency surface quenching should be carried out after carburizing, such as gears, shafts, and splined shafts with a modulus less than 3. 20Cr steel can be used in the quenched and tempered state to make parts with high operating speed and moderate impact load. 20Cr steel can also be used as low-carbon martensitic quenching steel to further increase the yield strength and resistance of steel. Tensile strength (add about 1.5 to 1.7 times).