ISO 80000-4:2019/AMD1:2025

Overview

ISO 80000-4:2019/AMD1:2025 is the first amendment to the second edition of ISO 80000-4, which addresses quantities and units specifically related to mechanics. Published by the International Electrotechnical Commission (IEC) in collaboration with the International Organization for Standardization (ISO), this amendment updates normative references and clarifies terminology related to mechanical quantities and their units. The update aligns with the 9th edition (2019) of the International System of Units (SI) by the Bureau International des Poids et Mesures (BIPM). This ensures consistency and uniformity in the application of mechanical measurements across industries worldwide.

Key Topics

• Updated Normative References
  The amendment replaces the previous statement of having no normative references with a direct citation of the International System of Units (SI), 9th edition (2019) by BIPM. This inclusion establishes mandatory references that users must follow in application.

• Clarified Terms and Definitions
  It revises key sentences in Clause 3 to emphasize that the names, symbols, definitions, and units for mechanical quantities conform strictly to the SI units and those listed in Table 1 of the standard.

• Harmonization with SI Units
  The amendment ensures full consistency with the internationally recognized system for mechanical quantities measurement, supporting global interoperability and data exchange.

• ISO/IEC Collaboration
  Developed jointly by ISO Technical Committee ISO/TC 12 and IEC Technical Committee IEC/TC 25, the amendment reflects a coordinated approach towards standardizing quantities and units in mechanics.

Applications

ISO 80000-4:2019/AMD1:2025 serves professionals and industries that require precise, standardized mechanical measurements, vital for:

• Engineering and Design
  Consistent use of units facilitates clear communication and accuracy in mechanical engineering projects globally.

• Manufacturing and Quality Control
  Correct application of units and quantities ensures quality standards and meets international compliance requirements.

• Research and Development
  Provides a uniform framework for reporting and comparing experimental mechanical data in scientific research.

• Education and Training
  Enhances learning materials and curricula focused on mechanics by aligning terminology with global standards.

• Information Technology Systems
  Facilitates development of databases, software, and digital tools that accurately handle mechanical data with standardized units.

Related Standards

• ISO 80000 Series
  The broader series covers quantities and units across various scientific and engineering domains, helping organizations standardize measurements beyond mechanics.

• International System of Units (SI), 9th Edition (2019)
  Published by BIPM, the SI provides the fundamental system of measurement units referenced by this amendment.

• IEC Standards on Electrotechnical Quantities and Units
  Complements this mechanical-focused document by covering related electrotechnical quantities and measurements.

Practical Value

Implementing ISO 80000-4:2019/AMD1:2025 ensures:

• Global Measurement Consistency
  Enables clear, unambiguous communication of mechanical quantities across borders.

• Reduced Errors and Misinterpretation
  Aligning terms and units with internationally accepted definitions mitigates common mistakes in data exchange.

• Support for Compliance and Certification
  Meets requirements of regulatory bodies and improves acceptance in international trade and technical assessments.

• Facilitates Innovation
  Standardized mechanical quantities provide a reliable foundation for technological advancements and cross-disciplinary collaboration.

By adopting this amendment, organizations improve measurement reliability and support worldwide standardization in mechanical quantities and units. For more information, visit ISO’s official website.