Overview
ISO 22553-1:2019 - Paints and varnishes - Electro-deposition coatings - Part 1: Vocabulary defines the standardized terminology used for electro-deposition coatings (commonly called e-coat). The document establishes clear definitions for phenomena, parameters and defects encountered in electrophoretic deposition processes used across the automotive sector and other industrial applications (e.g., chiller units, consumer products, radiators, aerospace, agriculture).
Key topics
This part of the ISO 22553 series focuses on terms and definitions that support consistent communication, testing and specification of e-coat systems. Important entries and concepts include:
- Process types: cathodic e-coat and anodic e-coat (connection of workpiece as cathode or anode).
- Electrical parameters: deposition voltage (tank voltage), deposition time, density of volume charge, rupture voltage.
- Film properties and defects: mapping (local film-thickness variation), pinholes, hashmarks, flores (crater formations), entry marks.
- Performance characteristics: throwing power (penetration into box sections), edge protection and edge corrosion.
- Material attributes and stability: pigment content (ash method), stoving process and stoving loss, non-volatile matter, bath stability, bacterial count.
- Definitions that support testing and control: workpiece, e-coat (electro-deposition coating material), sedimentation, wet-film resistance.
The standard also includes an informative Annex A listing relevant test methods and links terminology to test standards (e.g., ISO 22553-2 to ISO 22553-12, ISO 15091 for conductivity, ISO 3251 for non-volatile content).
Applications and users
ISO 22553-1:2019 is intended for:
- Coating formulators and manufacturers who develop water-thinnable electro-deposition coating materials.
- Automotive engineers and specifiers setting coating system requirements for corrosion protection and appearance.
- Quality and process engineers controlling deposition voltage, bath stability and defect rates on production lines.
- Test laboratories and standards writers who reference standardized vocabulary when applying or reporting ISO 22553 series test methods.
- Suppliers and OEMs in industries requiring consistent, corrosion-resistant coatings (automotive, aerospace, agriculture, consumer goods, HVAC/radiators).
Related standards
ISO 22553-1 is the vocabulary part of the ISO 22553 series. Annex A cross-references test-method parts (ISO 22553-2 through ISO 22553-12) and other relevant standards such as:
- ISO 15091 (conductivity)
- ISO 3251 (non-volatile-matter content)
- ISO 14680 (pigment/ash content)
- ISO 19396-1 (pH)
- ISO 22518 (solvent determination)
Use ISO 22553-1:2019 to ensure consistent terminology across specifications, testing and procurement for electro-deposition (e-coat) processes.
