ASTM-C455 Complete Document History
Standard Classification of Chrome, Chrome-Magnesia, Magnesia-Chrome, and Magnesia Brick

Complete Current Edition:
   2007 R22 EDITION - REAPPROVED IN 2022 - Sept. 27, 2022

Obsolete Revision Information:
   2007 R18 EDITION - REAPPROVED IN 2018 - Oct. 1, 2018
   2007 R13 EDITION - REAPPROVED IN 2013 - Sept. 15, 2013
   2007 EDITION - Chrome, Chrome-Magnesia, Magnesia-Chrome, and Magnesia Brick - March 1, 2007
   1997 EDITION - Chrome, Chrome-Magnesia, Magnesia-Chrome, and Magnesia Brick - Nov. 10, 1997
   1997 R99 EDITION - REAPPROVED IN 1999 - Nov. 10, 1997
   1984 R92(E1) EDITION - EDITORIALLY CORRECTED - Jan. 1, 1993
   1984 EDITION - Chrome, Chrome-Magnesia, Magnesia-Chrome, and Magnesia Brick - Jan. 1, 1988
   1984 R88 EDITION - REAPPROVED IN 1988 - Jan. 27, 1984