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Components with large cross sections requiring high toughness and core strength, such us, gears, crankshafts and heavy-duty gear shafts in aircraft, truck construction and mechanical engineering.


Soft Annealing

Heat to 650-700oC, cool slowly. This will produce a maximum Brinell hardness of 217.


Temperature: 850-880oC.

Intermediate Annealing

Temperature: 630-650oC.


Temperature: 850-980oC. Cooling from carburizing temperature: oil, water, thermal bathm, salt bath.


Core hardening: 830-870oC. Surface hardening: 780-820oC. Quenching media: oil, water, therma; bath.


Tempering temperature: 150-200oC.


Hot forming temperature: 1100-850oC.