35VB - GB T 1231-2024

Grade	35VB
Corresponding Standard	GB T 1231-2024 High strength bolts with large hexagon head assemblies for steel structures
Classification	Alloy Steel
Properties	Strength

35VB Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cu	V	B
Minimum Value	0.31	0.17	0.5	-	-	-	0.05	0.001
Maximum Value	0.37	0.37	0.9	0.04	0.04	0.25	0.12	0.004

35VB Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Impact Energy Absorption KV2 J
d=25	quenched 870°C water cooled, tempered 550°C water cooled	≥785	≥640	≥12	≥45	≥50

35VB Corresponding Standards(Same grade name, different standards)

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