Equivalent to domestic 30Cr2Ni2Mo, 30CrNiMo8 can be subjected to heat treatment such as normalizing, tempering and quenching. It is used to manufacture chains, screws, gears, arms, rollers and other mechanical parts. 30CrNiMo8 is used in shipbuilding, aircraft industry, mechanical engineering, petroleum industry, steel industry and other fields.

Chemical constituents of 30CrNiMo8

The chemical composition of 30CrNiMo8 contains 0.26-0.34% carbon. The manganese content in the material is 0.5-0.8%, which makes the material hard. The content of P is reduced to 0.025% and S to 0.035% max, because excessive P and S will damage the quality of steel and may lead to the fracture of alloy steel under low stress. The high chromium content is 1.8-2.2%, which increases the extra yield and tension during heat treatment.

Chemical constituents of 30CrNiMo8

C%: 0.26 - 0.34

Si%: 0.4 max.

Mn%: 0.5 - 0.8

Nickel %: 1.8-2.2

Cr%: 1.8 - 2.2

Mo%: 0.3 - 0.5

P%: maximum. 0.025

S%: 0.035 max.

Mechanical properties of 30CrNiMo8

Compared with other steel grades, 30CrNiMo8 steel has higher tensile strength. 30CrNiMo8 has high hardness and is suitable for hard mechanical parts. It has good ductility, extremely high toughness and good wear resistance under quenching and tempering conditions.

Appropriate value

Tensile strength 520- 1200 MPa.

The yield strength is 350-600MPa.

Elongation 1 1-26%

Hardness 180-350 HB

Application of 30CrNiMo8

30CrNiMo8 is often used to produce high-end mechanical parts because of its high hardness. 30CrNiMo8 can be used to manufacture mechanical parts besides screws, mechanical arms, pistons, shafts and shafts. 30CrNiMo8 can achieve high tensile strength because of its alloy steel composition. High temperature can be used to process 30CrNiMo8. Generally, 30CrNiMo8 material is used in the case of large product wear. The oil and gas industry, aviation, mechanical engineering, chemical industry and shipbuilding industry all deal with corrosion problems, making 30CrNiMo8 a very useful material.