SA-387 Grade22 Class2 K21590 - ASME SA-387/SA-387M-2019

Grade	SA-387 Grade22 Class2
	K21590
Corresponding Standard	ASME SA-387/SA-387M-2019 Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum
Brand/Supplier	China -> BAOSTEEL
Classification	Alloy Steel

SA-387 Grade22 Class2 Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S	Cr	Mo
熔炼分析	Minimum Value	0.05	-	0.3	-	-	2	0.9
熔炼分析	Maximum Value	0.15	0.5	0.6	0.025	0.025	2.5	1.1

	Component	C	Si	Mn	P	S	Cr	Mo
成品分析	Minimum Value	0.04	-	0.25	-	-	1.88	0.85
成品分析	Maximum Value	0.15	0.5	0.66	0.025	0.025	2.62	1.15

SA-387 Grade22 Class2 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
515~690	≥310	≥18	≥45

Approximate Comparison Table Steel Plate for Boilers and Pressure Vessels

China	United States	International Organization for Standardization	European Standard
GB	ASTM	ISO	EN
12Cr2Mo1R GB/T 713.2-2023	SA-387 Grade22 Class1 SA-387 Grade22 Class2 ASME Ⅱ-2-2021	12CrMo9-10 ISO 9328-2018	12CrMo9-10 EN 10028-2017

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