Surface Finish · Coatings & Painting

Powder Coating

Baked-on polymer armor: any RAL color, outdoor-proof, the toughest cosmetic coating.

Process specifications

Parameter	Value
Process group	Coatings & Painting
Coating thickness	60–120 µm
Tolerance impact	Significant: surfaces grow by the full coating thickness with ±20 µm process variation — fatal for fits. We mask threads, bores and datum faces by default for toleranced features; alternatively design mating surfaces with ~0.15 mm coating allowance. Sharp edges coat thinly — radius ≥0.5 mm helps coverage.
Corrosion rating	500–1,000 h salt spray with proper pretreatment (phosphate or chromate base).
Appearance	Any RAL color in gloss, satin, matte or textured; a continuous opaque polymer skin that fully hides the machined surface beneath.

⚠ Not suitable for

Unmasked precision mating faces — 100 µm of polymer in a fit causes assembly interference; internal threads (powder bridges and clogs them — mask or tap after coating); thin decorative coats of ≤60 µm (the process cannot go that thin — use wet painting); plastics and any material that cannot survive the 180–200 °C cure bake.