# ISO 6721-5:1996 — Withdrawn and superseded ISO standards For ISO 6721-5:1996, item title is Plastics — Determination of dynamic mechanical properties — Part 5: Flexural vibration — Non-resonance method; status code is 9599; successor is ISO 6721-5:2019; withdrawn / published date is 1996-05-30, recorded from its source on 2026-08-05. - **Identifier:** ISO 6721-5:1996 _(verified: appears in the quote below)_ - **Item title:** Plastics — Determination of dynamic mechanical properties — Part 5: Flexural vibration — Non-resonance method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 6721-5:2019 - **Withdrawn / published date:** 1996-05-30 _(verified: appears in the quote below)_ ## What the source says > 23978,IS,,ISO 6721-5:1996,Plastics — Determination of dynamic mechanical properties — Part 5: Flexural vibration — Non-resonance method,Plastiques — Détermination des propriétés mécaniques dynamiques — Partie 5: Vibration en flexion — Méthode hors résonance,1996-05-30,1,['83.080.01'],ISO/TC 61/SC 5,9599,,[73145],"['en','fr']",8,"

Describes a flexural vibration method for determining the components of the Young's complex modulus E/Zeichen) of polymers at frequencies typically in the range 0,01 Hz to 100 Hz. Suitable for measuring dynamic storage moduli in the range 10 MPa to 200 MPa. Particularly suited to the measurement of loss factors greater than 0,1.

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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).