A203 Grade D - ASTM A203/A203M-2023

Grade	A203 Grade D
Corresponding Standard	ASTM A203/A203M-2023 Pressure Vessel Plates, Alloy Steel, Nickel
Classification	Alloy Steel

A203 Grade D Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S	Ni
厚度≤50	Minimum Value	-	0.15	-	-	-	3.25
厚度≤50	Maximum Value	0.17	0.4	0.7	0.025	0.025	3.75

	Component	C	Si	Mn	P	S	Ni
厚度＞50~≤100	Minimum Value	-	0.15	-	-	-	3.25
厚度＞50~≤100	Maximum Value	0.2	0.4	0.8	0.025	0.025	3.75

A203 Grade D Mechanical Properties

thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
All thicknesses	450~585	≥255	L0=200mm: ≥19 L0=50mm: ≥23

Approximate Comparison Table Pressure-Bearing Flat Steel

China	Japan	United States	International Organization for Standardization	European Standard
GB	JIS	ASTM	ISO	EN
08Ni3DR GB/T 713.4-2023	SL3N255 SL3N275 SL3N440 JIS G 3127-2021	A203 GradeD A203 GradeE A203 GradeF ASTM A203/A203M-17	12Ni14 ISO 9328-4-2018	12Ni14 EN 10028-4-2017

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