Product Description
- Standard: JIS G4053 Low-alloyed steels for machine structural use And: JIS G4105 Chromium molybdenum steels SCM415 is the Japanese steel grade, and the domestic grade 15CrMo and ISO-693-17-1999 15CrMo4 equivalent, the steel is low carbon alloy steel, has high thermal strength and oxidation resistance, as well as good comprehensive mechanical properties, alloy structural steel, used in boilers and steam turbines for high pressure boiler superheater tube below 530℃. Steam conduit and corresponding forgings. The old Japanese number is SCM21. Full carburizing heat treatment inner and outer diameter grinding, toughness, super wear-resistant its quality stability suitable for: cylinder piston. SCM415 chrome-molybdenum gold-plating steel by carburizing treatment, the surface hardness of HRC62-64 degrees. It is pearlite heat-resistant steel, high strength, slightly low toughness, high lasting strength, good workability and cold strain plasticity, weldability, generally used in normalizing and high temperature tempering state. Chemical composition C: 0.13-0.18 Si: 0.15-0.35 Mn: 0.60-0.85 P: Below 0.03 S: Below 0.03 Cr: 0.9-1.2 Mo: 0.15-0.3 Mechanical property Tensile strength σb (MPa) : ≥440(45) Yield strength σs (MPa) : ≥295(30) Elongation δ5 (%) : ≥22, section shrinkage ψ (%) : ≥60 Impact power Akv (J) : ≥94
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