30CrNiMo8 (1.6580) Steel

EN 30CrNiMo8 (material number 1.6580) is one type of Cr-Mo-Ni alloy steel, commonly supplied in rounds and shafts. This steel is widely used in mold making, automotive parts, engineering machinery, high pressure containers and other fields that require high strength and good wear resistance due to its excellent mechanical properties and good hardenability.

30CrNiMo8 Steel

Chemical Composition of 30CrNiMo8 (1.6580) Steel

Steel 30CrNiMo8 chemistry complies with EN 10250-3 Open die steel forgings for general engineering purposes Part 3: Alloy special steels.

Carbon (C) 0.26-0.34 Molybdenum (Mo) 0.30-0.50
Silicon (Si) ≤ 0.40 Nickel (Ni) 1.80-2.20
Manganese (Mn) 0.30-0.60 Phosphorus (P) ≤ 0.035
Chromium (Cr) 1.80-2.20 Sulfur (S) ≤ 0.035

Equivalent Steel Grades of 30CrNiMo8 (1.6580)

1.6580 equivalent material according to DIN, JIS, AFNOR, BS, GB, GOST standards. The ISO 31CrNiMo8 chemical composition differs slightly from EN 30CrNiMo8.

Germany Japan France UK China Russia
30CrNiMo8 SNCM431 30CND8 823M30 30Cr2Ni2Mo 3KH3M3F

30CrNiMo8 (1.6580) Steel Mechanical Properties

30CrNiMo8 steel can obtain high hardness, high wear resistance and good toughness after appropriate heat treatment – quenching and tempering (+QT).

The properties of 30CrNiMo8 steel are particularly important in the manufacture of molds requiring complex shapes and high precision. In addition, due to its nickel and molybdenum content, this steel also has good corrosion and heat resistance, making it suitable for use in a wide range of environments.

Heat treatment temperature:

  • Quenching: 830 to 860 ℃
  • Tempering: 540 to 680 ℃

30CrNiMo8+QT mechanical properties for thickness of ruling section maximum 160mm at room temperature.

Tensile Strength (Rm) Yield Strength (Re) Elongation (A) Reduction (Z) Impact Strength (KV)
≥ 900 N/mm² ≥ 700 N/mm² ≥ 12% ≥ 50% ≥ 45J

When choosing to use 30CrNiMo8 steel, heat treatment and machining processes need to be designed according to specific application scenarios and performance requirements to ensure that the final product meets the intended performance criteria.