Standard Specification for Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components1

This preferred is issued under the fixed designation a 541/a 541m; the range at once following the designation shows the year of unique adoption or, inside the case of revision, the 12 months of ultimate revision. A number in parentheses indicates the yr of final reapproval. A superscript epsilon (e) indicates an article change for the reason that ultimate revision or reapproval

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