# ISO 75-1:1993 — Withdrawn and superseded ISO standards For ISO 75-1:1993, item title is Plastics — Determination of temperature of deflection under load — Part 1: General test method; status code is 9599; successor is ISO 75-1:2004; withdrawn / published date is 1993-08-26, recorded from its source on 2026-08-05. - **Identifier:** ISO 75-1:1993 _(verified: appears in the quote below)_ - **Item title:** Plastics — Determination of temperature of deflection under load — Part 1: General test method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 75-1:2004 - **Withdrawn / published date:** 1993-08-26 _(verified: appears in the quote below)_ ## What the source says > 3717,IS,,ISO 75-1:1993,Plastics — Determination of temperature of deflection under load — Part 1: General test method,Plastiques — Détermination de la température de fléchissement sous charge — Partie 1: Méthode générale d'essai,1993-08-26,1,['83.080.01'],ISO/TC 61/SC 2,9599,[3716],[31255],"['en','fr']",5,"

The principle of the method specified is subjecting a standard test specimen to a bending stress under three-point loading to produce one of the nominal surface stresses in the relevant part of this standard, raising the temperature at a uniform rate, measuring the temperature, at which a specified deflection occurs. The results obtained do not necessarily represent maximum use temperat ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).