Standard Practice for Macroetch Testing of Tool Steel Bars1
This fashionable is issued below the fixed designation a 561; the quantity right away following the designation shows the 12 months of authentic adoption or, within the case of revision, the 12 months of remaining revision. A range of in parentheses suggests the 12 months of remaining reapproval. A superscript epsilon (e) shows a piece of writing trade because the last revision or reapproval.
This standard has been accepted to be used by groups of the branch of protection
Click below to get ASTM A 561 – 71 International standard
You can also get ASTM A 560/A 560M – 93 International standard
