Anodizing
An electrochemical process that grows a protective oxide layer into the aluminium surface. It delivers excellent corrosion resistance, a hard scratch-resistant finish, and a premium metallic look. Ideal for architectural and heat-sink applications where durability and thermal performance both matter.
Powder Coating
An electrostatic spray applied and baked onto the profile, offering unlimited colour options and a tough decorative finish. Best for visible architectural profiles where colour matching and aesthetics take priority.
Electrophoresis (ED)
A water-borne coating that provides an even, film-like protection with a semi-gloss sheen. Commonly used for door and window profiles in coastal areas due to its high salt-spray resistance.
Choosing the Right Finish
Consider three factors: environment (coastal vs inland), function (thermal vs decorative), and lifespan expectations. Our engineering team helps you match the finish to the application — and we run all four surface lines in-house for consistent quality.
Frequently Asked Questions
Anodizing or powder coating – how do I choose?
Anodizing grows a hard oxide layer into the aluminium surface, giving excellent corrosion resistance, no peeling and consistent metallic finishes; it also improves radiative cooling in black form. Powder coating offers unlimited colours and thicker protection but adds a coating layer that can be scratched off. For heat sinks, anodizing is the usual choice; for visible structural parts, powder coating.
Does anodizing affect thermal performance?
A thin anodic layer has negligible effect on conduction through the base. Black anodizing slightly improves radiation, which helps in natural-convection designs. Avoid thick paint-like coatings on heat sink surfaces.
What anodizing thickness should I specify outdoors?
For coastal or industrial outdoor exposure, specify 15-25 microns (for example AA15/AA20). Indoor parts often use 8-10 microns. Sealing after anodizing is important for corrosion performance.