A437 Grade B4B - ASTM A437/A437M-2015

Grade	A437 Grade B4B
Corresponding Standard	ASTM A437/A437M-2015 Stainless and Alloy-Steel Turbine-Type Bolting Specially Heat Treated for High-Temperature Service
Classification	Alloy Steel

A437 Grade B4B Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	Ti	W	V	Al	Sn
Minimum Value	0.2	0.2	0.5	-	-	11	0.5	0.9	-	0.9	0.2	-	-
Maximum Value	0.25	0.5	1	0.025	0.025	12.5	1	1.25	0.05	1.25	0.3	0.05	0.04

A437 Grade B4B Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
≥1000	≥720	≥13	≥30

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