# ISO 16946:2015 — Withdrawn and superseded ISO standards For ISO 16946:2015, item title is Non-destructive testing — Ultrasonic testing — Specification for step wedge calibration block; status code is 9599; successor is ISO 16946:2017; withdrawn / published date is 2015-04-15, recorded from its source on 2026-08-05. - **Identifier:** ISO 16946:2015 _(verified: appears in the quote below)_ - **Item title:** Non-destructive testing — Ultrasonic testing — Specification for step wedge calibration block _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 16946:2017 - **Withdrawn / published date:** 2015-04-15 _(verified: appears in the quote below)_ ## What the source says > 57998,IS,,ISO 16946:2015,Non-destructive testing — Ultrasonic testing — Specification for step wedge calibration block,Essais non destructifs — Essais par ultrasons — Spécifications relatives aux blocs d'étalonnage à gradins,2015-04-15,1,['19.100'],ISO/TC 135/SC 3,9599,,[71694],"['en','fr']",4,"
ISO 16946:2015 specifies the dimensions, material, and manufacture of a step wedge steel block for the calibration of ultrasonic instruments.
" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).