Model Number: CMA80
Brand Name: A182 Grade F22
Key Specifications/Special Features:
DescriptionThis is chromium-molybdenum structural steel.ApplicationsComponent parts for steam boilers and turbines, shafts for higher temperature ranges.Physical properties (average values) at ambient temperatureModulus of elasticity [103x N/mm2]: 190-210
Density [g/cm3]: 7.80
Normalizing
Temperature: 920-980oC.
Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to 675oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Austenization
Temperature: 920-980oC.
Tempering
Tempering temperature: 650-750oC.
Forging
Hot forming temperature: 1050-850oC.
Chemical Composition (in weight %)
C 0.12
Si max. 0.40
Mn 0.55
Cr 2.25
Mo 1.00
Ni max. 0.50