SCM415 SCM21 - JIS G 4105-1979

SCM415 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.13	0.15	0.6	-	-	0.9	-	-	0.15
Maximum Value	0.18	0.35	0.85	0.03	0.03	1.2	0.25	0.3	0.25

SCM415 Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
Double Quenching and Tempering	≥834	≥16	≥40	235~321	≥69

Approximate Comparison Table structural alloy steel

SCM415 Corresponding Standards(Same grade name, different standards)

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