JIS G4053 SCM440 steel work/ steel structures/ steel machining parts

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10-May-2024

JIS G4053 SCM440 steel is a commonly used steel for high-strength fasteners. The products of SCM44O steel mainly contain steel works/ steel structures/ steel machining parts that have the advantages of stable composition, low harmful elements, high purity of steel, small decarburization layer and less surface defect. More information about SCM44O steel is below.

Chemical composition of JIS G 4053 SCM440 steel

Grade		the chemical composition
SCM440	C	Si	Mn	P max	Mo	S max	Cu max	Ni max	Cr max
SCM440	0.38-0.42	0.15-0.35	0.60-0.85	0.030	0.15-0.30	0.03	0.30	0.25	0.90-1.20

Mechanical property of JIS G 4053 SCM440 steel

Grade	Tensile strength Min σb (MPa)	Yield strength min σs (MPa)	Elongation % min(δ5)	impact strength Akv (J)	hardness
SCM440	1080(110)	930(95)	12%	≥63	≤217HB

The shape, dimension, mass and tolerances will comply with JIS G4053
Heat treatment: normalizing, tempering, annealing, quenching, hardening and tempering.
Processing items :If you need simple pretreatment for the SCM44O steel, we also can do that for you, we can supply JIS G4053 SCM44O steel work/ steel structures/ steel machining parts. Usually the SCM44O steel work/ steel structures/ steel machining parts are treated through the processing of hot rolling, hot forging, cutting, cold drawing carburizing, etc. Your special processing requirements are accepted.
General use: SCM44O steel work/ steel structures/ steel machining parts are easy for SPHEroidizing annealing, low cracking rate, stable quality of heat treatment, uniform hardness, and are widely used in power plants including engines, steam turbine fasteners, the main shafts, heavy load transmission shafts, large section parts of turbo generators.
If you need JIS G4053 SCM44O steel work/ steel structures/ steel machining parts for power plants, please contact us and send your inquiry.