ASTM-B671 Complete Document History
Standard Specification for Refined Iridium

Complete Current Edition:
   1981 R21 EDITION - REAPPROVED IN 2021 - Dec. 10, 2021

Obsolete Revision Information:
   1981 R17 EDITION - REAPPROVED IN 2017 - April 15, 2017
   1981 R10 EDITION - REAPPROVED IN 2010 - Dec. 1, 2010
   1981 R05 EDITION - REAPPROVED IN 2005 - May 1, 2005
   1981 R99(E1) EDITION - UNS NUMBER WAS ADDED - June 1, 1999
   1981 R93(E1) EDITION - EDITORIALLY CORRECTED - Dec. 1, 1993
   1981 R87(E1) EDITION - Standard Specification for Refined Iridium - Jan. 30, 1981