ASTM-A203 Historical Revision Information
Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel

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Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel


1.1 This specification covers nickel-alloy steel plates intended primarily for welded pressure vessels.

1.2 Plates under this specification are available with four strength levels and two nickel compositions as follows:

Nominal Yield Tensile Nickel Strength, Strength, Content min, ksi min, ksi Grade % [MPa] [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]

1.3 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements. However, current practice normally limits the maximum thickness of plates furnished under this specification as follows:

Maximum Thickness, Grade in. [mm] A 6 [150] B 6 [150] D 4 [100] E 4 [100] F 4 [100]

1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents. Therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.


Nickel alloys-steel plates for welded pressure vessels; Pressure vessel steel materials-plates; Steel plate-alloy steel; ICS Number Code 77.140.30 (Steels for pressure purposes); 77.140.50 (Flat steel products and semi-products)

To find similar documents by ASTM Volume:

01.04 (Steel--Structural, Reinforcing, Pressure Vessel, Railway)

To find similar documents by classification:

77.140.30 (Steels for pressure purposes Steels for pressure pipes and tubes for specific use, see 77.140.75)

77.140.50 (Flat steel products and semi-products Including plate, sheet and strip Steel strips for springs, see 77.140.25)

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Publication Date

Dec. 28, 1990

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Page Count

3 pages

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