PT550QL2 - ISO 9328-6-2018

Grade	PT550QL2
Corresponding Standard	ISO 9328-6-2018 Steel Flat Products for Pressure Purposes - Weldable Fine Grain Steels, Quenched and Tempered
Classification	Alloy Steel

PT550QL2 Chemical Element Composition Content (%)

Component	C ^②	Si	Mn	P	S	Cr	Ni	Cu	Mo	Ti	V	Nb	B	Al ^①
Minimum Value	-	-	0.7	-	-	-	-	-	-	-	-	-	-	0.02
Maximum Value	0.18	0.5	1.6	0.015	0.01	0.3	1	0.4	0.5	0.03	0.08	0.05	0.005	-

PT550QL2 Mechanical Properties

	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
6 ≤ t ≤ 65	550~690	≥415	≥16
65 ≤ t ≤ 100	520~660	≥380	≥16
100 ≤ t ≤ 150	490~620	≥315	≥16

Approximate Comparison Table Pressure-Bearing Flat Steel

United States	International Organization for Standardization
ASTM	ISO
A537-2	PT550QL2

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