SNB23-5 - JIS G 4108-2022

Grade	SNB23-5
Corresponding Standard	JIS G 4108-2022 Alloy Steel Bars for Special Application Bolting Materials
Classification	Alloy Steel

SNB23-5 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo
Minimum Value	0.37	0.2	0.6	-	-	0.65	1.55	0.2
Maximum Value	0.44	0.35	0.95	0.025	0.025	0.95	2	0.3

SNB23-5 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
Bar stock; d≤150	Quenching + Tempering	≥820	≥715	≥15	≥50	248~311	≥47
Bars; 150<d≤200	Quenching + Tempering	≥790	≥685	≥15	≥50	255~321	≥47
Bar stock; 200<d≤240	Quenching + Tempering	≥790	≥685	≥15	≥50	262~321	*
Bar; d≤240	Annealing					≤235

SNB23-5 Corresponding Standards(Same grade name, different standards)

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