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This part of ISO 25137 establishes a system of designation for sulfone polymer moulding and extrusion materials, including polysulfone (PSU), polyethersulfone (PESU) and polyphenylsulfone (PPSU), which can be used as the basis for specifications. The responsible committee for this document is NA 054-02-10 AA "Thermoplast-Formmassen" ("Thermoplastic materials") at DIN Standards Committee Plastics (FNK).
This document has been replaced by: DIN EN ISO 24025-1:2020-08 .