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Si (％): ≤ 0.12
Mn (％): 0.40 ~ 0.50
S (％)≤: 0.005
Cr (％): 10.0 ~ 10.6
Ni (％): 0.70 ~ 0.80
Other (％): N 0.040 ~ 0.070, Nb 0.040 ~ 0.080, V 0.15 ~ 0.25, Al ≤0.010
Heat treatment: quenched and tempered
Tensile strength, σb/MPa: 870 ~ 970
Elongation, δ5≥(％): 14.0
Heat-resistant steel is widely used in the field of manufacturing the boiler, steam turbine, motive power machine, industrial furnace, and other mechanical parts of aviation, petrochemical engineering operating at high temperature. Those parts must hold the features: high temperature strength, resistance to high temperature oxide etch, enough toughness, excellent machinability, weldability, structure stability based on different usages.
Heat resistant steel is generally smelt in electric arc furnace or induction furnace. For higher quality,it should be smelt via technology of vacuum refining and external refining.
Martensitic heat resistant steels adopt hardening and tempering to stabilize the structure for excellent composite mechanical properties and high temperature strength.
PRODUCT PROFILE & DIMENSIONS
Square bar / Flat bar: 10mm to 500mm
Length: Fixed length or random length or based on the customer's special requirement.
Forging piece: stepped shafts, and other different shapes based on OEM.
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