Standard Practice for Castings, Carbon, Low-Alloy, and Martensitic Stainless Steel, Ultrasonic Examination Thereof1
This fashionable is issued under the ﬁxed designation a 609/a 609m; the wide variety right away following the designation suggests the yr of unique adoption or, within the case of revision, the year of remaining revision. A number of in parentheses indicates the year of remaining reapproval. A superscript epsilon (e) indicates a piece of writing exchange since the remaining revision or reapproval.
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