A217 Grade WC9 J21890 WC9 - ASTM A217/A217M-2014

Grade	A217 Grade WC9
USA UNS	J21890
Other Names
Corresponding Standard	ASTM A217/A217M-2014 Standard Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service
Classification	Cast Steel

A217 Grade WC9 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S ^**	Cr	Ni ^*	Cu ^*	Mo	W ^*	More
Minimum Value	0.05	-	0.4	-	-	2	-	-	0.9	-	(Ni+Cu+W)≤1
Maximum Value	0.18	0.6	0.7	0.035	0.035	2.75	0.5	0.5	1.2	0.1	(Ni+Cu+W)≤1

A217 Grade WC9 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
485~655	≥275	≥20	≥35

1 Approximate Comparison Table Cast Steel

China	United States	International Organization for Standardization
GB	UNS	ISO	Numerical Grade
ZG17Cr2Mo ZG17Cr2Mo1	J21890	G17CrMo9-10	1.7379

2 Approximate Comparison Table Cast Steel

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