ASTM A744/A744M-21a
Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service

Standard No.

ASTM A744/A744M-21a

Release Date

2021

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM A744/A744M-21a

Scope

1.1 This specification covers iron-chromium-nickel alloy stainless steel castings intended for particularly severe corrosive applications. 1.2 This specification requires post-weld heat treatment of all weld repairs affecting surfaces intended to be wetted by the corrosive medium. For applications for which post-weld heat treatment is not considered mandatory for retention of acceptable corrosion resistance, refer to Specification A743/A743M. NOTE 1—For general corrosion-resistant alloy castings, reference should be made to Specification A743/A743M. For general heat-resistant alloy castings, reference should be made to Specification A297/A297M. For nickel-base alloy castings, refer to Specification A494/A494M. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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 standard. 1.3.1 Within the text, the SI units are shown in brackets. 1.3.2 Inch-pound units are applicable for material ordered to Specification A744 and SI units for material ordered to Specification A744M. 1.4 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 A744/A744M-21a Referenced Document

• ASTM A262 Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
• ASTM A297/A297M Standard Specification for Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application
• ASTM A494/A494M Standard Specification for Castings, Nickel and Nickel Alloy*， 2022-03-01 Update
• ASTM A743/A743M Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
• ASTM A781/A781M Standard Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
• ASTM A957/A957M Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use*， 2024-04-21 Update

ASTM A744/A744M-21a history

• 2021 ASTM A744/A744M-21a Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
• 2021 ASTM A744/A744M-21 Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
• 2020 ASTM A744/A744M-20a Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
• 2020 ASTM A744/A744M-20 Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
• 2013 ASTM A744/A744M-13 Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
• 2010 ASTM A744/A744M-10e1 Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
• 2010 ASTM A744/A744M-10 Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
• 2006 ASTM A744/A744M-06 Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
• 2000 ASTM A744/A744M-00 Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
• 1998 ASTM A744/A744M-98 Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service