SNCM 439 SNCM 8 - JIS G 4103-1979

Grade	SNCM 439
Old Grade
Corresponding Standard	JIS G 4103-1979 Nickel Chromium Molybdenum Steel
Classification	Alloy Steel

SNCM 439 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.36	0.15	0.6	-	-	0.6	1.6	-	0.15
Maximum Value	0.43	0.35	0.9	0.03	0.03	1	2	0.3	0.3

SNCM 439 Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
Quenching + Tempering	≥980.7	≥883	≥16	≥45	293~352	≥69

New and Old Grade Replacement List

Approximate Comparison Table Structural Alloy Steel

SNCM439 Corresponding Standards(Same grade name, different standards)

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