SNB24-2 - JIS G 4108-2010

Grade	SNB24-2
Corresponding Standard	JIS G 4108-2010 Alloy Steel Bars for Special Application Bolting Materials (Amendment 1)
Classification	Alloy Steel

SNB24-2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo
Minimum Value	0.37	0.2	0.7	-	-	0.7	1.65	0.3
Maximum Value	0.44	0.35	0.9	0.025	0.025	0.95	2	0.4

SNB24-2 Mechanical Properties

condition	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
Bars; d≤175	Quenching + Tempering	≥1070	≥960	≥11	≥40	311~401	≥40
Bars; 175<d≤240	Quenching + Tempering	≥1070	≥960	≥11	≥40	321~415	*
Bar; d≤240	Annealing					≤235

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