ASTM B423.pdf Standard Specification for
Nickel-Iron-Chromium-Molybdenum-Copper Alloy
(UNS N08825, N08221, and N06845) Seamless Pipe and
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This standard is issued under the fixed designation B423; 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.