PT440QL2 - ISO 9328-6-2018

Grade	PT440QL2
Corresponding Standard	ISO 9328-6-2018 Steel Flat Products for Pressure Purposes - Weldable Fine Grain Steels, Quenched and Tempered
Classification	Alloy Steel

PT440QL2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	Ti	V	Nb	B	Al ^①
Minimum Value	-	-	0.7	-	-	-	-	-	-	-	-	-	-	0.02
Maximum Value	0.16	0.55	1.6	0.015	0.01	0.3	0.5	0.4	0.25	0.03	0.06	0.05	0.005	-

PT440QL2 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
440~560	≥325	≥19

Approximate Comparison Table Pressure-Bearing Flat Steel

Japan	International Organization for Standardization
JIS	ISO
SLA325B	PT440QL2

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