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Material Name: Alloy Structural Steel
Brand number: SCM440(Japanese brand, see standard JIS G4053-2008
Application:
It belongs to medium hardenability steel. After heat treatment, it has good strength, good comprehensive mechanical properties, good technability and high yield of finished products.The highest operating temperature is 427℃.Can be used as steam turbine fasteners.
Characteristics and application
1.Good quenching property, can be deep quenching, rather than the market anti-saw lock surface quenching
2.Less tendency to temper brittleness
3.Good high temperature processing, beautiful after processing
4.Good welding
5.The absorption performance of the impact is good, the hammer hit it will have a sense of rebound, unable to carry out violent destruction advantages:
(1) Good processability
(2). Good shock absorption performance
(3). Welding is easy
Chemical Composition
C: 0.38 to 0.43
Si: 0.15 to 0.35
Mn: 0.60 to 0.85
P: 0.03 or less
S: 0.03 or less
Cu: 0.30 or less
Ni: 0.25 or less
Cr: 0.90 to 1.20
Mo: 0.15 to 0.30
Ni: 0.25 or less
Cu: 0.30 or less
Mechanical Properties of SCM440:
Tensile strength σb (MPa) : ≥1080(110) Yield strength σs (MPa) : ≥930(95)
Elongation Δ5 (%) : ≥12
Section shrinkage ψ(%) : ≥45
Impact work AKV (J) : ≥63
Impact toughness value α kV (J/ Cm&SUP 2;)A: 78 (8) or
Hardness: 217 HB or less