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 A182/A182M.
1.2 The purchaser may specify in the order or contract any appropriate supplementary requirements that are provided in Specification A788/A788M.
1.3 Unless the order specifies the applicable “M” specification designation the material shall be furnished to the inchpound 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.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM A1049/A1049M-18 Referenced Document
ASTM A182/A182M Standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products
ASTM A388/A388M Standard Practice for Ultrasonic Examination of Heavy Steel Forgings
ASTM A745/A745M Standard Practice for Ultrasonic Examination of Austenitic Steel Forgings
ASTM A788/A788M Standard Specification for Steel Forgings, General Requirements
ASTM A923 Standard Test Methods for Detecting Detrimental Intermetallic Phase in Wrought Duplex Austenitic/Ferritic Stainless Steels
ASTM E165/E165M Standard Practice for Liquid Penetrant Testing for General Industry
ASTM G48 Standard Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution
ASTM A1049/A1049M-18 history
2023ASTM A1049/A1049M-18(2023) Standard Specification for Stainless Steel Forgings, Ferritic/Austenitic (Duplex), for Pressure Vessels and Related Components
2018ASTM A1049/A1049M-18 Standard Specification for Stainless Steel Forgings, Ferritic/Austenitic (Duplex), for Pressure Vessels and Related Components
2010ASTM A1049/A1049M-10(2015) Standard Specification for Stainless Steel Forgings, Ferritic/Austenitic (Duplex), for Pressure Vessels and Related Components
2010ASTM A1049/A1049M-10 Standard Specification for Stainless Steel Forgings, Ferritic/Austenitic (Duplex), for Pressure Vessels and Related Components
2006ASTM A1049/A1049M-06 Standard Specification for Stainless Steel Forgings, Ferritic/Austenitic (Duplex), for Pressure Vessels and Related Components