China 30CrNiMo8-Alloy steel is used for automotive and general components which require high demands on strength and toughness and good hardenability. It is especially suitable for heavy-duty parts in the aviation, automotive and military industries.
Applications of 30CrNiMo8: For permanently stressed components with large cross sections for automotive and mechanical engineering. For economic performance under severe dynamic stress, parts must be designed for optimum strength or toughness.
Heat Treatment Conditions
- +A Soft annealed/Soft annealing
- +N Normalized/Normalizing
- +QT Quenched and Tempered
- +U Untreated
- +SR Stress Relieved
Normalizing:870℃-880℃,Cool in air
Soft Annealing:650℃-700℃,Cooling 10℃ per hour in furnace,max. 248 HB
Stress Relieving:50°C under the temperature of tempering
Hardening:830 – 860°C,oil or polymer,840-850°C,water
Tempering:540°C – 660°C, cool in still air
Drawn and hot-rolled bars, flat bars 30CrNiMo8, 1.6580
Forgings and forged bars in grade 30CrNiMo8, 1.6580