A387 Grade12 Class2 K11757 - ASTM A387/A387M-2025

Grade	A387 Grade12 Class2
USA UNS	K11757
Corresponding Standard	ASTM A387/A387M-2025 Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum
Classification	Alloy Steel

A387 Grade12 Class2 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

A387 Grade12 Class2 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
450~585	≥275	≥22

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