0.68 - 0.75 %
0.2 - 0.35 %
0.15 - 0.35 %
It is mainly used for components in automotive engineering, such as connecting rods, but also for components used in the rolling and bearing industry.
Normalizing 820-850°C (Air), Soft annealing: 650-700°C (slow cooling), Quenching: 790-820°C (Water), Tempering: 550-660°C (Oil, Polymer,Water)
It is formable at 800-1000°C and should be then slowly cooled.
Quenched and Tempered
It is usually not weldable and should will not be used in welded constructions.