ASTM-B772 › Complete Document History
Standard Guide for Specifying the Chemical Compositions for Electrical Contact Materials (Arcing and Nonarcing) (Withdrawn 2021)


Obsolete Revision Information:
   WITHDRAWN - WITHDRAWN WITHOUT SUPERSEDING DOCUMENT - Jan. 22, 2021
   1997 R12 EDITION - REAPPROVED IN 2012 - Dec. 1, 2012
   1997 R08 EDITION - REAPPROVED IN 2008 - May 1, 2008
   1997 R03 EDITION - REAPPROVED IN 2003 - Nov. 1, 2003
   1997 EDITION - Specifying the Chemical Compositions for Electrical Contact - Jan. 10, 1997
   1987 R91(E1) EDITION - EDITORIALLY CORRECTED - Aug. 1, 1991
   1987 EDITION - Specifying the Chemical Compositions for Electrical Contact - Aug. 28, 1987