Grade B24V 4340V Mod. - ASTM A540/540M-2015

Grade	Grade B24V
Other Names
Corresponding Standard	ASTM A540/540M-2015 Alloy-Steel Bolting for Special Applications
Classification	Alloy Steel

Grade B24V Chemical Element Composition Content (%)

Component	C	Si ^②	Mn	P ^①	S ^①	Cr	Ni	Mo	V
Minimum Value	0.37	0.15	0.6	-	-	0.6	1.55	0.4	0.04
Maximum Value	0.44	0.35	0.95	0.025	0.025	0.95	2	0.6	0.1

Grade B24V Mechanical Properties

	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
Class 3, d≤100	≥1000	≥895	≥12	≥40	293~363	-12.2°C ≥47
Class 3, 100＜d≤200	≥1000	≥895	≥12	≥40	302~375	≥41
Class 3, 200＜d≤240	≥1000	≥895	≥12	≥40	311~388	≥34
Class 2, d≤100	≥1070	≥965	≥11	≥40	311~388	≥41
Class 2, 100＜d≤200	≥1070	≥965	≥11	≥40	311~401	≥34
Class 2, 200＜d≤280	≥1070	≥965	≥11	≥40	321~415	-
Class 1, d≤100	≥1140	≥1035	≥10	≥35	321~415	≥34
Class 1, 100＜d≤200	≥1140	≥1035	≥10	≥35	331~429	-
Class 1, 200＜d≤280	≥1140	≥1035	≥10	≥35	331~444	-

GradeB24V Corresponding Standards(Same grade name, different standards)

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