SN EN ISO 21920-3:2022 outlines a comprehensive framework for specifying surface texture in geometrical product specifications (GPS). Published by ISO, it serves industries focused on quality assurance in manufacturing and engineering.

=== SECTION 1 ===

Purpose and objectives

The primary aim of SN EN ISO 21920-3:2022 is to establish complete specification operators for surface texture based on the profile method. This standard enhances the clarity and consistency of surface texture specifications, ensuring that manufacturers and clients have a mutual understanding of requirements. By providing guidelines on default settings for surface texture parameters such as Ra, Rq, and Rz, the standard promotes quality control and precision in manufacturing processes, ultimately leading to improved product performance and customer satisfaction.

=== SECTION 2 ===

Scope: who must comply

SN EN ISO 21920-3:2022 applies to manufacturers, quality assurance professionals, and engineers involved in the production and inspection of components where surface texture plays a critical role. This includes industries such as automotive, aerospace, and industrial machinery, where precise surface characteristics are essential for functionality and durability. In the context of Metrology & Measurement, compliance with this standard ensures that surface texture measurements are accurate and standardized across different measurement methods and equipment, aligning with global quality standards.

=== SECTION 3 ===

How SN EN ISO 21920-3:2022 relates to other standards

SN EN ISO 21920-3:2022 is part of a broader framework of ISO standards that govern surface texture and geometrical product specifications. Notably, it relates to:

• ISO 21920-3:2021: The previous version which laid the groundwork for current specifications.
• EN ISO 4288:1998: Establishes general principles for the assessment of surface texture, complementing SN EN ISO 21920-3:2022 by providing measurement guidelines.
• ISO 1302: Provides guidelines for indicating surface texture in technical product specifications, which is essential for effective communication in engineering design.

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Revision history and current status

SN EN ISO 21920-3:2022 was published by the International Organization for Standardization (ISO) in 2022, succeeding the previous version, ISO 21920-3:2021. The most recent revision introduced enhancements in the specification operators and refined default settings for surface texture parameters, improving usability and alignment with technological advancements in measurement techniques. This ensures that the standard remains relevant in a rapidly evolving industrial landscape.