Overview
ISO/TS 12928:1999 - Lubricants, industrial oils and related products (class L) - Family R (products for temporary protection against corrosion) - provides guidelines for establishing product specifications. It is intended to facilitate the application of ISO 6743-8 and to serve as a common basis for discussion between end users and suppliers when defining requirements for temporary corrosion‑protection products.
This Technical Specification covers:
- Classification guidance for neat, solvent‑based, water‑miscible, plastic and paste corrosion‑preventive products;
- Recommended physico‑chemical, performance and film characteristics to include in specifications;
- Informative annexes with suggested test methods (Annexes A–E).
It does not set mandatory limits and excludes health, safety, disposal and environmental requirements (those must follow national regulations).
Key topics and requirements
- Classification and product types: Neat products (RA, RC, RD, RL), solvent‑based (RE, RF, RG, RP, RM), water‑miscible concentrates (RB, RH, RP, RM), plastic melts (RT) and pastes (RK).
- Physico‑chemical characteristics to consider (as delivered and, for solventborne products, on dry extract): density, viscosity, flash point, pour point, water content, sulfated ash, elemental content, neutralization/saponification numbers.
- Performance characteristics: protection duration (humidity/cyclic tests), salt spray exposure, staining tendency, UV/daylight resistance, fingerprint neutralization, water‑displacing ability and compatibility with wet skin‑pass processes.
- Film characteristics: coverage (g/m²), wetting/film homogeneity, removability, compatibility with electrophoretic coatings and behavior during welding without prior degreasing.
- Test guidance: Informative annexes provide suggested methods (e.g., compatibility with wet skin pass - Annex A; long duration cyclic staining - Annex B; outdoor shelter exposure - Annex C; film homogeneity - Annex D; electrophoretic paint compatibility - Annex E).
Applications and who uses it
ISO/TS 12928 is practical for:
- Procurement and specification authors defining temporary corrosion‑protection products;
- Coating and lubricant suppliers preparing technical data sheets and proposals;
- Corrosion engineers, maintenance planners and quality managers setting acceptance criteria for storage, transport and intermediate protection of metal parts;
- OEMs and fabricators who require agreed tests and performance descriptors for temporary preservative films.
Related standards
- ISO 6743-8 (Family R classification)
- ISO 6743-0, ISO 3448 (viscosity classification), ISO 2137 (grease penetrometry)
- Test and national documents referenced in the TS (e.g., NF T standards, ISO salt spray methods)
Use ISO/TS 12928 as a specification framework - select the relevant characteristics and negotiate specific test methods and limits between end user and supplier to match the intended application.