Q420HD - GB /T 31941-2015

Grade	Q420HD
Corresponding Standard	GB /T 31941-2015 Non-Nuclear Safety Class Welded Carbon Steel and Alloy Steel Pipes for Nuclear Power Plant
Classification	Carbon Steel

Q420HD Chemical Element Composition Content (%)

	Component	C	Si	Mn ^①	P	S	Cr	Ni	Cu	Mo	V	Nb	B ^②	Al ^③
板厚≤40	Minimum Value	-	0.15	0.9	-	-	-	-	-	-	-	-	-	0.02
板厚≤40	Maximum Value	0.18	0.5	1.5	0.02	0.015	0.3	0.6	0.35	0.2	0.07	0.04	0.001	-

	Component	C	Si	Mn ^①	P	S	Cr	Ni	Cu	Mo	V	Nb	B ^②	Al ^③
板厚>40	Minimum Value	-	0.15	0.9	-	-	-	-	-	-	-	-	-	0.02
板厚>40	Maximum Value	0.18	0.5	1.5	0.02	0.015	0.3	0.6	0.35	0.3	0.07	0.04	0.001	-

Q420HD Mechanical Properties

thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
All thicknesses	585~705	≥420	≥20

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