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Stock 100CrMn6/1.3520 Chromium-manganese alloy bearing steel


Applications
Roller bearings with thickness up to 50 mm. 

Description
Medium alloy, oil-hardening tooling steel, which is hard-wearing.

Quality Standard:

DIN 17230-1980 Ball and Roller Bearing Steels

Chemical Composition(%)
CSiMnPSCrNiCu
0.90-1.050.50-0.701.00-1.200.030 max0.025 max1.40-1.650.30 max0.30 max
HEAT TREATMENT:

Soft Annealing
Heat to 760-800oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 217.

Normalizing
Normalizing temperature: 860-900oC.

Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to approx. 650oC, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Hardening
Harden from a temperature of 830-890oC followed by oil quenching. Hardness after quenching is approx. 64 HRC.

Tempering
Tempering temperature: 150-180oC.

Forging
Hot forming temperature: 1100-850oC.