ASTM A 561 – 71 pdf free download

Standard Practice for Macroetch Testing of Tool Steel Bars1

This standard is issued under the fixed designation A 561; 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 (e) indicates an editorial change since the last revision or reapproval.

ASTM A 561 – 71 pdf free download

This standard has been approved for use by agencies of the Department of Defense.

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