ASTM-A561 › Complete Document History
Standard Practice for Macroetch Testing of Tool Steel Bars

Complete Current Edition:
   2008 R20 EDITION - REAPPROVED FOR 2020 - March 17, 2020

Obsolete Revision Information:
   2008 R14 EDITION - REAPPROVED IN 2014 - March 1, 2014
   2008 EDITION - Standard Practice for Macroetch Testing of Tool Steel Bars - Oct. 1, 2008
   1971 R04 EDITION - REAPPROVED IN 2004 - Dec. 1, 2004
   1971 R99 EDITION - REAPPROVED IN 1999 - Jan. 1, 1999
   1971 R93 EDITION - REAPPROVED IN 1993 - Jan. 1, 1993