P620QL 1.8890 - EN 10216-3-2013 - H2ABC

中文版

Grade	P620QL
European Standard Steel Grade	1.8890
Corresponding Standard	EN 10216-3-2013 Seamless Steel Tubes for Pressure Purposes - Technical Delivery Conditions - Part 3: Alloy Fine Grain Steel Tubes
Classification	Alloy Steel

P620QL Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	Ti	V	Nb	Al ^ⓑ	More
Minimum Value	-	-	1	-	-	-	-	-	-	-	-	-	-	0.02	Nb+Ti+V ≤0.22；Al/N≥2ⓑ
Maximum Value	0.2	0.6	1.7	0.025	0.015	0.3	0.8	0.3	0.1	0.02	0.04	0.2	0.05	-	Nb+Ti+V ≤0.22；Al/N≥2ⓑ

P620QL Mechanical Properties

thickness t mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %
t≤20	Quenched and tempered (+QT)	740~930	≥620	≥16（l） ≥14（T）
20＜t≤40	Quenched and tempered (+QT)	690~860	≥580	≥16（l） ≥14（T）
40＜t≤50	Quenched and tempered (+QT)	630~800	≥540	≥16（l） ≥14（T）
50＜t≤65	Quenched and tempered (+QT)	630~800	≥500	≥16（l） ≥14（T）

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