ASTM-C545 › Complete Document History
Standard Classification of Zircon Refractories

Complete Current Edition:
   1997 R22 EDITION - REAPPROVED IN 2022 - Sept. 26, 2022

Obsolete Revision Information:
   1997 R18 EDITION - REAPPROVED IN 2018 - Oct. 1, 2018
   1997 R13 EDITION - REAPPROVED IN 2013 - Sept. 15, 2013
   1997 R07 EDITION - REAPPROVED IN 2007 - Oct. 1, 2007
   1997 R02 EDITION - REAPPROVED IN 2002 - Dec. 10, 2002
   1997 EDITION - Standard Classification of Zircon Refractories - Nov. 10, 1997
   1984A R92(E1) EDITION - EDITORIALLY CORRECTED - Jan. 1, 1993
   1984 R88 EDITION - REAPPROVED IN 1988 - Aug. 27, 1984