SA-387 Grade12 Class1 K11757 - ASME SA-387/SA-387M-2017

Grade	SA-387 Grade12 Class1
	K11757
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 Grade12 Class1 Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S	Cr	Mo
熔炼分析	Minimum Value	0.05	0.15	0.4	-	-	0.8	0.45
熔炼分析	Maximum Value	0.17	0.4	0.65	0.025	0.025	1.15	0.6

	Component	C	Si	Mn	P	S	Cr	Mo
成品分析	Minimum Value	0.04	0.13	0.35	-	-	0.74	0.4
成品分析	Maximum Value	0.17	0.45	0.73	0.025	0.025	1.21	0.65

SA-387 Grade12 Class1 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
380~550	≥230	≥22

Approximate Comparison Table Steel Plate for Boilers and Pressure Vessels

China	United States	International Organization for Standardization	European Standard		Russia
GB	ASTM	ISO	EN	Numerical Grade	GOST
15CrMoR GB/T 713.2-2023	SA-387 Grade 12 Class 1 SA-387 Grade 12 Class 2 ASME Ⅱ-A-2021	13CrMo4-5 ISO 9328-2018	13CrMo4-5 EN 10028-2017	1.7335	12ХМ

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