# ISO 7345:1987 — Withdrawn and superseded ISO standards For ISO 7345:1987, item title is Thermal insulation — Physical quantities and definitions; status code is 9599; successor is ISO 7345:2018; withdrawn / published date is 1987-11-19, recorded from its source on 2026-08-05. - **Identifier:** ISO 7345:1987 _(verified: appears in the quote below)_ - **Item title:** Thermal insulation — Physical quantities and definitions _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 7345:2018 - **Withdrawn / published date:** 1987-11-19 _(verified: appears in the quote below)_ ## What the source says > 14024,IS,,ISO 7345:1987,Thermal insulation — Physical quantities and definitions,Isolation thermique — Grandeurs physiques et définitions,1987-11-19,2,"['01.060','27.220']",ISO/TC 163,9599,[14023],[65000],"['en','fr']",7,"

Defines physical quantities used in the field of thermal insulation, i.a. quantity of heat, heat flow rate, density of heat flow rate, thermal conductivity, thermal resistance, thermal transmittance, heat capacity, thermal diffusivity, thermal effusivity etc., and gives the corresponding symbols and units.

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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).