Overview
EN ISO 2819:2018 (ISO 2819:2017) is a CEN/ISO document that reviews methods for testing adhesion of metallic coatings applied to metallic substrates by electrodeposition or chemical deposition. The standard is a practical guide to qualitative adhesion tests used for production inspection and routine quality checks. It summarizes many commonly used test techniques, their scope and limitations, and points out that some quantitative adhesion tests exist but are generally unsuitable for routine production control.
Key Topics
- Scope and intent
- Focuses on qualitative adhesion testing of electrodeposited and chemically deposited metallic coatings.
- Notes that specialized quantitative methods require special apparatus and skill and are normally excluded from routine QC.
- Catalogue of test methods (representative list from the standard)
- Burnishing and ball-burnishing tests
- Shot-peening (including an Annex A method for silver deposits 100–600 µm)
- Peel test
- File, grinding, sawing and chisel tests
- Scribe and grid (cross-hatch) test
- Bending, twisting (winding) and drawing tests
- Tensile tests (qualitative classification; document distinguishes where quantitative measurement may be used)
- Thermal shock, cathodic, Rockwell-C, scratch and cavitation tests
- Practical considerations
- Selection of test depends on coating thickness, mechanical properties, and part geometry.
- The standard emphasizes which methods are suitable for thin deposits versus thick deposits, and for production-level inspection versus research applications.
Applications
- Quality control in plating and surface‑finishing plants: rapid, qualitative methods (e.g., scribe & grid, burnishing) for acceptance testing of plated components.
- Incoming inspection and supplier assessment: confirm adequate adhesion before assembly or coating-dependent service.
- Failure analysis and process troubleshooting: identify areas of poor bond or delamination using appropriate destructive/semidestructive tests.
- R&D and materials development: while EN ISO 2819 is focused on qualitative methods, its review helps select appropriate quantitative tests (in separate standards or research protocols) for detailed adhesion characterization.
Who should use this standard
- Coating and electroplating manufacturers
- Quality/control engineers and inspection labs
- Surface engineers, metallurgists and failure analysts
- Procurement specialists specifying adhesion acceptance criteria
Related standards
- Individual coating standards that include specific adhesion tests should be used in preference where applicable. EN ISO 2819 is a general review; consult specific ISO/CEN standards for prescriptive quantitative methods and product-specific requirements.
Keywords: EN ISO 2819:2018, ISO 2819:2017, adhesion testing, metallic coatings, electrodeposited coatings, chemically deposited coatings, shot peening adhesion test, scribe and grid test, qualitative adhesion test.
