SUPERSEDED (click for Active standard)
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1.1 This specification covers ferritic/austenitic (duplex) stainless steel forgings for boilers, pressure vessels, and associated equipment in grades that are also found in Specification A 182/A 182M.
1.2 The purchaser may specify in the order or contract any appropriate supplementary requirements that are provided in Specification A 788/A 788M.
1.3 Unless the order specifies the applicable "M" specification designation the material shall be furnished to the inch-pound units.
1.4 The values stated in either inch-pound or SI (metric) units are to be regarded separately as standard. Within the text and tables, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall 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.
A182/A182M Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
A388/A388M Practice for Ultrasonic Examination of Steel Forgings
A745/A745M Practice for Ultrasonic Examination of Austenitic Steel Forgings
ICS Number Code 77.140.20 (Steels of high quality)
UNSPSC Code 31132600(Stainless steel forgings)
ASTM A1049 / A1049M-06, Standard Specification for Stainless Steel Forgings, Ferritic/Austenitic (Duplex), for Pressure Vessels and Related Components, ASTM International, West Conshohocken, PA, 2006, www.astm.orgBack to Top