1.1 This specification covers the classification of sulfone plastics suitable for injection molding and extrusion.1.2 The properties included in this specification are those required to identify the compositions covered. There may be other requi This specification covers the classification of sulfone plastics suitable for injection molding and extrusion. It is intended to be a means of calling out sulfone plastics used in the fabrication of end items or parts. Sulfone polymers, being thermopla