ISO 9227:2022/Amd 1:2024

Overview

ISO 9227:2022/Amd 1:2024 is an important amendment to the international standard ISO 9227:2022, which governs corrosion tests in artificial atmospheres using salt spray tests. This amendment primarily updates the footnote of warning related to the registered trademark "CAS Registry Number." The standard is developed by ISO Technical Committee TC 156, specializing in corrosion of metals and alloys, in collaboration with the European Committee for Standardization (CEN) to ensure harmonized corrosion testing methods worldwide.

Salt spray testing, also known as fog testing, is a widely recognized accelerated corrosion test method used to evaluate the corrosion resistance of coatings, metals, and alloys under controlled artificial atmospheres containing salt particles.

Key Topics

• Correction of Footnote for Trademark Use
  The amendment revises the footnote regarding the registered trademark "CAS Registry Number," clarifying that:

  • CAS Registry Number® is a trademark of the American Chemical Society (ACS).
  • This note is provided solely for user convenience and does not imply ISO’s endorsement of any product.
  • Equivalent products may be utilized if they produce equivalent test results.

• Standardization Scope
  While the existing 2022 edition defines detailed procedures for salt spray testing, this amendment ensures the proper legal and informational context is maintained for users referencing chemical substances via CAS numbers.

• Collaborative Development
  The amendment is a result of joint efforts between ISO/TC 156 and CEN/TC 262, affirming global alignment in corrosion testing protocols and terminology.

Applications

• Corrosion Resistance Testing
  ISO 9227 salt spray tests are applied extensively in industries such as automotive, aerospace, electronics, and construction to evaluate protective coatings on metals, helping predict their long-term durability in corrosive environments.

• Quality Control and Research
  Laboratories use this standardized method to perform accelerated testing that supports material selection, coating formulation, and lifecycle management. This amendment influences accurate referencing of chemical substances during analysis.

• Compliance and Certification
  Manufacturers rely on this standardized testing method to meet regulatory and customer requirements for corrosion resistance. Accurate trademark usage and disclaimers enhance compliance with intellectual property laws.

Related Standards

• ISO 8044:2019 – Corrosion of metals and alloys - Basic terms and definitions relevant to corrosion testing.
• ISO 9223:2012 – Corrosion of metals and alloys - Corrosivity of atmospheres - Classification, providing environmental context for salt spray testing.
• ISO 16701 – Guidelines for using salt spray testing results as part of corrosion risk evaluation.
• ISO 17025 – General requirements for the competence of testing and calibration laboratories, ensuring quality management in corrosion testing labs.

Practical Value

This amendment ensures users applying ISO 9227 salt spray testing fully understand the legal disclaimers related to chemical substance identifiers, promoting legal clarity and consistent use of nomenclature across industries. By maintaining precise trademark references, the update enhances the standard’s reliability and applicability in corrosion testing, material qualification, and coating performance assessment. It supports industry professionals in achieving accurate, reproducible results while adhering to intellectual property guidelines, thus improving product integrity and customer confidence globally.

For more information and access to the full document, visit ISO’s official website.