SA540M GradeB23 Class5 E-4340-H SA540M-B23 CL5 - ASME SA-540/SA540M-1993

Grade	SA540M GradeB23 Class5
Other Names
Corresponding Standard	ASME SA-540/SA540M-1993 Specification for Alloy Steel Bolting Materials for Special Applications
Classification	Alloy Steel

SA540M GradeB23 Class5 Chemical Element Composition Content (%)

Component	C	Si	Mn	P ^*	S ^*	Cr	Ni	Mo
Minimum Value	0.37	0.15	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

SA540M GradeB23 Class5 Mechanical Properties

diameter d mm	Mark	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
d≤152.4	class3	≥927	≥724	≥15	≥50	248~311
152.4<d≤203.2	class3	≥793	≥689	≥15	≥50	255~321
203.2<d≤241.3	class3	≥793	≥689	≥15	≥50	262~321

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