# ISO 2400:1972 — Withdrawn and superseded ISO standards

For ISO 2400:1972, item title is Welds in steel — Reference block for the calibration of equipment for ultrasonic examination; status code is 9599; successor is ISO 2400:2012; withdrawn / published date is 1972-06-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 2400:1972 _(verified: appears in the quote below)_
- **Item title:** Welds in steel — Reference block for the calibration of equipment for ultrasonic examination _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 2400:2012
- **Withdrawn / published date:** 1972-06-01 _(verified: appears in the quote below)_

## What the source says

> 7296,IS,,ISO 2400:1972,Welds in steel — Reference block for the calibration of equipment for ultrasonic examination,Soudures sur acier — Bloc de référence pour l'étalonnage des appareils pour l'examen par ultrasons,1972-06-01,1,['25.160.40'],ISO/TC 135/SC 3,9599,,[57041],"['en','fr']",1,"<p>Establishes material and dimensions of the reference block. The tolerances on all dimensions are 0,1 mm.</p>"

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).