SNB21-5 - JIS G 4108-2010 - H2ABC

中文版

Grade	SNB21-5
Corresponding Standard	JIS G 4108-2010 Alloy steel bars for special application bolting materials (Amendment 1)
Classification	Alloy Steel

SNB21-5 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Mo	V
Minimum Value	0.36	0.2	0.45	-	-	0.8	0.5	0.25
Maximum Value	0.44	0.35	0.7	0.025	0.025	1.15	0.65	0.35

SNB21-5 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 ≤ 50	Quenching + Tempering	≥820	≥715	≥15	≥50	241~285	*
Bars; 50<d≤150	Quenching + Tempering	≥790	≥685	≥15	≥50	248~302	*
Bars; 150<d≤200	Quenching + Tempering	≥790	≥685	≥15	≥50	255~311	*
Bar; d≤200	Annealing					≤235

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!