ASTM-A940 Complete Document History
Standard Specification for Vacuum Treated Steel Forgings, Alloy, Differentially Heat Treated, for Turbine Rotors (Withdrawn 2017)


Obsolete Revision Information:
   WITHDRAWN - NO REPLACEMENT - Nov. 15, 2017
   2006 R16 EDITION - REAPPROVED IN 2016 - April 1, 2016
   2006 R11 EDITION - REAPPROVED IN 2011 - June 15, 2011
   2006 EDITION - Vacuum Treated Steel Forgings, Alloy, Differentially Heat Tr - March 1, 2006
   1996 EDITION - Vacuum Treated Steel Forgings, Alloy, Differentially Heat Tr - Sept. 10, 1996
   1996 R01 EDITION - REAPPROVED IN 2001 - Sept. 10, 1996
   1995 EDITION - Vacuum Treated Steel Forgings, Alloy, Differentially Heat Tr - July 15, 1995