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1.1 This specification covers high-strength quenched and tempered alloy steel plates intended for use in fusion welded boilers and other pressure vessels.
1.2 This specification includes a number of grades as manufactured by different producers, but all having the same mechanical properties and general characteristics.
1.3 The maximum thickness of plates furnished under this specification shall be as follows:
|A, B, C, J||1.25 in. [32 mm]|
|H, K, M, S, T||2 in. [50 mm]|
|P||4 in. [100 mm]|
|F||2.50 in. [65 mm]|
|E, Q||6 in. [150 mm]|
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 the specification.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A20/A20M Specification for General Requirements for Steel Plates for Pressure Vessels
A435/A435M Specification for Straight-Beam Ultrasonic Examination of Steel Plates
A577/A577M Specification for Ultrasonic Angle-Beam Examination of Steel Plates
A578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications
ICS Number Code 77.140.30 (Steels for pressure purposes)
UNSPSC Code 30102204(Steel plate )