# ISO 18203:2016 — Withdrawn and superseded ISO standards

For ISO 18203:2016, item title is Steel — Determination of the thickness of surface-hardened layers; status code is 9599; successor is ISO 18203:2026; withdrawn / published date is 2016-12-05, recorded from its source on 2026-08-05.

- **Identifier:** ISO 18203:2016 _(verified: appears in the quote below)_
- **Item title:** Steel — Determination of the thickness of surface-hardened layers _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 18203:2026
- **Withdrawn / published date:** 2016-12-05 _(verified: appears in the quote below)_

## What the source says

> 61748,IS,,ISO 18203:2016,Steel — Determination of the thickness of surface-hardened layers,Acier — Détermination de l'épaisseur des couches durcies superficielles,2016-12-05,1,['77.040.99'],ISO/TC 17/SC 7,9599,"[9250,10988,30695]",[89021],"['en','fr']",12,"<p>ISO 18203:2016 specifies a method of measuring the case hardening depth, surface hardening depth, nitriding hardness depth and total thickness of surface hardening depth obtained, e.g. thermal (flame and induction hardening, electron beam hardening, laser beam hardening, etc.) or thermochemical (carbonitriding, carburizing and hardening, hardening and nitriding, etc.) treatment.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).