# ISO 8257-1:1998 — Withdrawn and superseded ISO standards

For ISO 8257-1:1998, item title is Plastics — Poly(methyl methacrylate) (PMMA) moulding and extrusion materials — Part 1: Designation system and basis for specifications; status code is 9599; successor is ISO 24026-1:2020; withdrawn / published date is 1998-11-12, recorded from its source on 2026-08-05.

- **Identifier:** ISO 8257-1:1998 _(verified: appears in the quote below)_
- **Item title:** Plastics — Poly(methyl methacrylate) (PMMA) moulding and extrusion materials — Part 1: Designation system and basis for specifications _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 24026-1:2020
- **Withdrawn / published date:** 1998-11-12 _(verified: appears in the quote below)_

## What the source says

> 26815,IS,,ISO 8257-1:1998,Plastics — Poly(methyl methacrylate) (PMMA) moulding and extrusion materials — Part 1: Designation system and basis for specifications,Plastiques — Poly(méthacrylate de méthyle) (PMMA) pour moulage et extrusion — Partie 1: Système de désignation et base de spécification,1998-11-12,2,['83.080.20'],ISO/TC 61/SC 9,9599,[15364],[77547],"['en','fr']",5,"<p>1.1 This part of ISO 8257 establishes a system of designation for poly(methyl methacrylate) (PMMA) thermoplastic materials, which may be used as the basis for specifications. </p><p>1.2 The types of PMMA plastics are differentiated from each other by the classification system based on appropriate levels of the designat

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).