ASTM-D4549 › Complete Document History
Standard Classification System and Basis for Specification for Polystyrene and Rubber-Modified Polystyrene Molding and Extrusion Materials (PS)

Complete Current Edition:
   2015 R21 EDITION - REAPPROVED IN 2021 - July 7, 2021

Obsolete Revision Information:
   2015 EDITION - Specification for Polystyrene and Rubber-Modified Polystyrene Molding and Extrusion Materials (PS) - Sept. 15, 2015
   2011 EDITION - POLYSTYRENE AND RUBBER-MODIFIED POLYSTYRENE MOLDING AND EXTRUSIO - April 1, 2011
   2003 EDITION - POLYSTYRENE AND RUBBER-MODIFIED POLYSTYRENE MOLDING AND EXTRUSIO - Nov. 10, 2003
   2000 EDITION - POLYSTYRENE AND RUBBER-MODIFIED - Nov. 10, 2000
   1998 EDITION - POLYSTYRENE MOLDING AND EXTRUSIO - Nov. 10, 1998
   1995 EDITION - POLYSTYRENE MOLDING AND EXTRUSIO - June 15, 1995
   DOD ADOPTION 1 - FYI ONLY: DOD ADOPTED - June 15, 1989
   1985 EDITION - POLYSTYRENE MOLDING AND EXTRUSIO - Nov. 29, 1985