ISO 80000-5:2019/Amd 1:2025
(Amendment)Quantities and units - Part 5: Thermodynamics - Amendment 1
Quantities and units - Part 5: Thermodynamics - Amendment 1
Grandeurs et unités — Partie 5: Thermodynamique — Amendement 1
General Information
- Status
- Published
- Publication Date
- 23-Jul-2025
- Technical Committee
- ISO/TC 12 - Quantities and units
- Drafting Committee
- ISO/TC 12 - Quantities and units
- Current Stage
- 6060 - International Standard published
- Start Date
- 24-Jul-2025
- Due Date
- 31-May-2026
- Completion Date
- 24-Jul-2025
Relations
- Effective Date
- 03-Jun-2023
Overview
ISO 80000-5:2019/Amd 1:2025 is the latest amendment to the international standard ISO 80000-5, which specifically addresses quantities and units related to thermodynamics. Published by the International Organization for Standardization (ISO), this amendment updates and refines the definitions, symbols, and units as used in thermodynamic measurements and calculations. The document serves professionals involved in scientific research, engineering, and industry where precise thermodynamic data is critical.
This amendment integrates updates consistent with the International System of Units (SI) as defined by the Bureau International des Poids et Mesures (BIPM) 9th edition (2019), ensuring harmonization across global standards.
Key Topics
- Thermodynamic Quantities: Clarifies nomenclature, symbols, and definitions for fundamental thermodynamic properties such as temperature, entropy, enthalpy, and thermodynamic work.
- Unit Consistency with SI: Emphasizes the use of SI units and references the current BIPM SI brochure, ensuring unit uniformity and international coherence.
- References Update: Adds normative references to relevant standards, reinforcing the document’s role in a broader framework of measurement and units standardization.
- Terminology Refinement: Updates terms and definitions to improve clarity, aligning with internationally recognized terminology used in thermodynamics.
- Scope of Standardization: Specifies the requirements for quantities and units used in thermodynamic contexts within scientific and technical documentation.
Applications
ISO 80000-5:2019/Amd 1:2025 is essential for:
- Scientific Research: Ensures accurate communication and reproducibility in experimental thermodynamics and theoretical studies.
- Engineering and Manufacturing: Supports precise measurement and control of thermodynamic processes in fields such as chemical engineering, energy production, HVAC, and materials science.
- Technical Documentation: Provides a standardized framework for technical manuals, reports, and educational materials dealing with thermodynamic quantities.
- International Trade and Compliance: Facilitates consistency and legal conformity across borders by harmonizing thermodynamic units and definitions, helping to reduce technical barriers to trade.
- Standard Development: Aids other standardization committees in integrating thermodynamics concepts into broader international standards.
Related Standards
- ISO 80000 Series: The broader series covering quantities and units across various scientific disciplines, ensuring a comprehensive framework for measurement units.
- BIPM SI Brochure (9th Edition, 2019): The foundational document for the International System of Units referenced in this amendment.
- IEC and CEN Collaborations: ISO 80000-5 aligns with the works of the International Electrotechnical Commission (IEC) and the European Committee for Standardization (CEN), promoting interdisciplinary coherence.
- ISO/IEC Directives: Guidance documents for developing and updating international standards that ensure quality and consistency in standardization procedures.
For professionals seeking to maintain compliance with international thermodynamic measurement standards, ISO 80000-5:2019/Amd 1:2025 provides critical updates for consistent, accurate, and standardized quantities and units. By aligning with the SI system and modernizing terminology, this amendment enhances clarity and practical usability in the global engineering and scientific community.
Keywords: ISO 80000-5 amendment, thermodynamics units, thermodynamic quantities, SI units, international standards, BIPM SI, measurement standardization, thermodynamics terminology, ISO thermodynamics, engineering standards.
ISO 80000-5:2019/Amd 1:2025 - Quantities and units — Part 5: Thermodynamics — Amendment 1 Released:24. 07. 2025
ISO 80000-5:2019/Amd 1:2025 - Grandeurs et unités — Partie 5: Thermodynamique — Amendement 1 Released:24. 07. 2025
REDLINE ISO 80000-5:2019/Amd 1:2025 - Grandeurs et unités — Partie 5: Thermodynamique — Amendement 1 Released:24. 07. 2025
Frequently Asked Questions
ISO 80000-5:2019/Amd 1:2025 is a standard published by the International Organization for Standardization (ISO). Its full title is "Quantities and units - Part 5: Thermodynamics - Amendment 1". This standard covers: Quantities and units - Part 5: Thermodynamics - Amendment 1
Quantities and units - Part 5: Thermodynamics - Amendment 1
ISO 80000-5:2019/Amd 1:2025 is classified under the following ICS (International Classification for Standards) categories: 01.060 - Quantities and units. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 80000-5:2019/Amd 1:2025 has the following relationships with other standards: It is inter standard links to ISO 80000-5:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ISO 80000-5:2019/Amd 1:2025 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
International
Standard
ISO 80000-5
Second edition
Quantities and units —
2019-08
Part 5:
AMENDMENT 1
Thermodynamics
2025-07
AMENDMENT 1
Grandeurs et unités —
Partie 5: Thermodynamique
AMENDEMENT 1
Reference number
ISO 80000-5:2019/Amd.1:2025(en) © ISO 2025
ISO 80000-5:2019/Amd.1:2025(en)
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 80000-5:2019/Amd.1:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
right
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Norme
internationale
ISO 80000-5
Deuxième édition
Grandeurs et unités —
2019-08
Partie 5:
AMENDEMENT 1
Thermodynamique
2025-07
AMENDEMENT 1
Quantities and units —
Part 5: Thermodynamics
AMENDMENT 1
Numéro de référence
ISO 80000-5:2019/Amd.1:2025(fr) © ISO 2025
ISO 80000-5:2019/Amd.1:2025(fr)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2025
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii
ISO 80000-5:2019/Amd.1:2025(fr)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes nationaux
de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est en général
confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l’ISO participent également aux travaux. L’ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d'approbation requis pour les différents types de documents ISO. Le présent document
a été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2
(voir www.iso.org/directives).
L’ISO attire l’attention sur le fait que la mise en application du présent document peut entraîner l’utilisation
d’un ou de plusieurs brevets. L’ISO ne prend pas position quant à la preuve, à la validité et à l’applicabilité
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pas reçu notification qu’un ou plusieurs brevets pouvaient être nécessaires à sa
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© ISO 2025
Formatted: French (France)
Formatted: Default Paragraph Font, French (France)
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvreoeuvre, aucune partie
de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique
Formatted: Default Paragraph Font, French (France)
ou mécanique, y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable.
Formatted: French (France)
Une autorisation peut être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du
demandeur. Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
ISO copyright office
Formatted: French (France)
CP 401 • Ch. de Blandonnet 8
Formatted: French (France)
CH-1214 Vernier, GenèveGeneva
Tél.:Phone: + 41 22 749 01 11
Formatted: English (United Kingdom)
E-mail: copyright@iso.org
Formatted: English (United Kingdom)
Web: www.iso.org
Formatted: French (France)
Website: www.iso.org
Publié en Suisse
Formatted: French (France)
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
© ISO 2025 – Tous droits réservés
ii
ISO 80000-5:2019/Amd. 1:2025(fr) Formatted: Font: 11 pt
Formatted: Font: 11 pt
Avant-propos Formatted: French (France)
Formatted: Adjust space between Latin and Asian text,
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes nationaux de
Adjust space between Asian text and numbers
normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est en général confiée
aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude a le droit de faire partie du
comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l’ISO participent également aux travaux. L’ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont décrites
dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, d
...
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