# ISO 9441:1988 — Withdrawn and superseded ISO standards

For ISO 9441:1988, item title is Steel — Determination of niobium content — PAR spectrophotometric method; replacement named by the register is ISO 9441:2026; publication date is 1988-12-08, verified against its source on 2026-09-14.

- **Identifier:** ISO 9441:1988 _(verified: appears in the quote below)_
- **Item title:** Steel — Determination of niobium content — PAR spectrophotometric method _(verified: appears in the quote below)_
- **Replacement named by the register:** ISO 9441:2026 _(verified: appears in its own passage below)_
- **Publication date:** 1988-12-08 _(verified: appears in the quote below)_

## What the source says

> 17144,IS,,ISO 9441:1988,Steel — Determination of niobium content — PAR spectrophotometric method,Aciers — Dosage du niobium — Méthode spectrophotométrique au PAR,1988-12-08,1,['77.080.20'],ISO/TC 17/SC 1,9599,,[88046],"['en','fr']",6

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Replacement named by the register

> 88046,IS,,ISO 9441:2026,Steel — Determination of niobium content — 4-(2-Pyridylazo)-resorcinol (PAR) spectrophotometric method,Aciers — Détermination de la teneur en niobium — Méthode spectrophotométrique au moyen de 4-(2-Pyridylazo)-résorcinol (PAR),2026-08-03,2,['77.080.20'],ISO/TC 17/SC 1,6060,[17144],,['en'],11

## Source

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

Last verified: 2026-09-14. Review by: 2027-03-13.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).