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Home > ASTM > ASTM A203 alloy steel plates for pressure vessels

ASTM A203 alloy steel plates for pressure vessels

ASTM A203 is a kind of Ni-alloy steel material used to fabric high temperature pressure vessels. Obviously, ASTM A203 this property is based on it's Ni composition. ASTM A203 has five grades or levels-- Grade A/B/D/E/F.

Standard: ASTM A-203/A-203M
Thickness :1.5mm -260mm
Width :1000mm-4000mm
Length :1000mm-18000mm
MOQ: 1 PC
Product type : Steel plate
Delivery time : Promptly ( Stock) or 10-40 days (Production)
Stock : Available
MTC: Available
Payment Term : T/T or L/C At sight .

ASTM A203 steel chemical composition : %

Composition	Type	Thickness (mm)	A	B	D	E,F
C ≤	Heat analyse	≤50	0.17	0.21	0.17	0.20
	Heat analyse	50~100	0.20	0.24	0.20	0.23
	Product analyse	50~100	0.20	0.24	0.20	0.23
	Product analyse	＞100	0.23	0.25	-	-
Mn ≤	Heat analyse	≤50	0.70	0.70	0.70	0.70
	Heat analyse	＞50	0.80	0.80	0.80	0.80
	Product analyse	≤50	0.78	0.78	0.78	0.78
	Product analyse	＞50	0.88	0.88	0.88	0.88
P ≤	Heat analyse	-	0.035	0.035	0.035	0.035
S ≤	Product analyse	-	0.035	0.035	0.035	0.035
Si	Heat analyse	-	0.15~0.40	0.15~0.40	0.15~0.40	0.15~0.40
Si	Product analyse	-	0.13~0.45	0.13~0.45	0.13~0.45	0.13~0.45
Ni	Heat analyse	-	2.10~2.50	2.10~2.50	3.25~3.75	3.25~3.75
Ni	Product analyse	-	2.03~2.57	2.03~2.57	3.18~3.82	3.18~3.82

ASTM A203 steel Mechanical Properties:

Grade	Nominal Nickel Content %	Yield Strength, min, ksi [MPa]	Tensile Strength, min, ksi [MPa]
A	2.25	37 [255]	65 [450]
B	2.25	40 [275]	70 [485]
D	3.50	37 [255]	65 [450]
E	3.50	40 [275]	70 [485]
F	3.50
2 in. [50 mm] and under		55 [380]	80 [550]
Over 2 in. [50 mm]		50 [345]	75 [515]

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