# ISO 6721-3:1994 — Withdrawn and superseded ISO standards

For ISO 6721-3:1994, item title is Plastics — Determination of dynamic mechanical properties — Part 3: Flexural vibration — Resonance-curve method; status code is 9599; successor is ISO 6721-3:2021; withdrawn / published date is 1994-11-03, recorded from its source on 2026-08-05.

- **Identifier:** ISO 6721-3:1994 _(verified: appears in the quote below)_
- **Item title:** Plastics — Determination of dynamic mechanical properties — Part 3: Flexural vibration — Resonance-curve method _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 6721-3:2021
- **Withdrawn / published date:** 1994-11-03 _(verified: appears in the quote below)_

## What the source says

> 13169,IS,,ISO 6721-3:1994,Plastics — Determination of dynamic mechanical properties — Part 3: Flexural vibration — Resonance-curve method,Plastiques — Détermination des propriétés mécaniques dynamiques — Partie 3: Vibration en flexion — Méthode en résonance,1994-11-03,1,['83.080.01'],ISO/TC 61/SC 5,9599,[13166],[79997],"['en','fr']",10,<p>Specifies a bending-vibration method based upon resonance curves for determining the flexural complex modulus of homogeneous plastics and the damping properties of laminated plastics intended for acoustic insulation.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).