tailieunhanh - Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service

This specification covers iron-chromium-nickel alloy, stainless steel castings intended for particularly severe corrosive applications. 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. | Designation A744 A744M 13 Standard Specification for Castings Iron-Chromium-Nickel Corrosion Resistant for Severe Service1 This standard is issued under the fixed designation A744 A744M the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1. Scope A370 Test Methods and Definitions for Mechanical Testing This specification covers iron-chromium-nickel alloy of Steel Products stainless steel castings intended for particularly severe corro- A494 A494M Specification for Castings Nickel and Nickel sive applications. Alloy A732 A732M Specification for Castings Investment Car- This specification requires postweld heat-treatment of bon and Low Alloy Steel for General Application and all weld repairs affecting surfaces intended to be wetted by the Cobalt Alloy for High Strength at Elevated Temperatures corrosive medium. For applications for which postweld heat- A743 A743M Specification for Castings Iron-Chromium treatment is not considered mandatory for retention of accept- Iron-Chromium-Nickel Corrosion Resistant for General able corrosion resistance refer to Specification A743 A743M. Application NOTE 1 For general corrosion-resistant alloy castings reference A781 A781M Specification for Castings Steel and Alloy should be made to Specification A743 A743M. For general heat-resistant Common Requirements for General Industrial Use alloy castings reference should be made to Specification A297 A297M. A957 Specification for Investment Castings Steel and Alloy For nickel-base alloy castings refer to Specification A494 A494M. Common Requirements for General Industrial Use The values stated in either SI units or inch-pound units E29 Practice for Using Significant .