Standard Speciﬁcation for Vacuum-Treated Alloy Steel Forgings for Turbine Rotor Disks and Wheels1
This standard is issued underneath the ﬁxed designation a 471; the number right away following the designation suggests the 12 months of original adoption or, within the case of revision, the 12 months of final revision. A number of in parentheses indicates the 12 months of closing reapproval. A superscript epsilon (e) suggests an editorial exchange because of the last revision or reapproval.
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You can also get here ASTM A470-03 International standard