Overview
EN ISO 19496-1:2017 - Vitreous and porcelain enamels: Terminology (Part 1) defines standardized terms and definitions used in the technology of vitreous (porcelain) enamels. The document provides an authoritative vocabulary to describe materials, processes, defects, equipment and test methods encountered in enamelling. It clarifies practical usage in this field (terminology may differ in other fields) and notes that “vitreous enamel” is synonymous with “porcelain enamel.” This part is a terminology/reference document and does not set performance or testing requirements.
Key topics
The standard organizes and defines terms across practical categories, for example:
- Materials and compositions: frit, coloured frit, clear frit, colouring oxide, mill additions
- Processes and operations: dipping, spraying, electrostatic powder application, firing, anneal, abrasive blasting, alkali degreasing
- Properties and performance: adherence (enamel-to-metal bonding), coefficient of expansion, abrasion/chemical/alkali/acid resistance, cleanability
- Equipment and tooling: box furnace, continuous furnace, ball mill, burning tool
- Defects and failure modes: blister, pinhole, boiling, burn-off, black specks, beading, cascading
- Test and control terms: button (fusion) test, fusion flow test, bisque (unfired coating)
- Terminology management: Annex A provides cross-reference of alternative terms (synonyms and US/other-country equivalents)
Practical applications
- Ensures consistent use of enamel terminology in technical specifications, product data sheets, reports and inspection records.
- Supports clear communication among manufacturers, coating technologists, testing laboratories, corrosion specialists, designers and procurement teams involved with enamelled components.
- Useful for creating compliant documentation, training materials, quality-control checklists, and international trade or regulatory submissions where precise enamel terminology is needed.
- Aids R&D teams and process engineers when specifying enamel formulations, selecting processes (e.g., electrostatic powder vs. wet slip), or diagnosing coating defects.
Who should use this standard
- Enamel manufacturers and formulators
- Metal coaters, enamellers and production engineers
- Quality assurance and inspection personnel in coatings and corrosion protection
- Test laboratories and certification bodies
- Product designers and specifiers in appliances, cookware, sanitaryware, architectural and industrial equipment
- Standards committees and technical writers preparing product standards or procurement specifications
Related standards
- Part of the ISO 19496 series (see ISO catalogue for other parts)
- Adopted by CEN as EN ISO 19496-1:2017; this edition supersedes earlier EN 15826:2009
- Use alongside applicable ISO/CEN test and performance standards for enamel coatings when specifying or verifying product performance
Keywords: vitreous enamel, porcelain enamel, enamel terminology, EN ISO 19496-1:2017, enamelling processes, enamel defects, enamel coating, frit, firing, electrostatic powder.