# ISO 2039-1:1993 — Withdrawn and superseded ISO standards For ISO 2039-1:1993, item title is Plastics — Determination of hardness — Part 1: Ball indentation method; status code is 9599; successor is ISO 2039-1:2001; withdrawn / published date is 1993-01-28, recorded from its source on 2026-08-05. - **Identifier:** ISO 2039-1:1993 _(verified: appears in the quote below)_ - **Item title:** Plastics — Determination of hardness — Part 1: Ball indentation method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 2039-1:2001 - **Withdrawn / published date:** 1993-01-28 _(verified: appears in the quote below)_ ## What the source says > 21467,IS,,ISO 2039-1:1993,Plastics — Determination of hardness — Part 1: Ball indentation method,Plastiques — Détermination de la dureté — Partie 1: Méthode de pénétration à la bille,1993-01-28,2,['83.080.01'],ISO/TC 61/SC 2,9599,[6813],[31264],"['en','fr']",5,"
Specifies a method, which consists of forcing a ball under a specified load into the surface of a test specimen. The depth of impression is measured under load. The surface area of the impression is computed from its depth. The ball indentation hardness is then calculated from the following relationship: Ball indentation hardness = Applied load : Surface area of impression.
" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).