ForMatter/Finishes/coating/Powder coat — gloss
finish_coating_powder_gloss

Powder coat — gloss

coating · polished · TGIC polyester gloss, epoxy-polyester hybrid gloss

Pigment-loaded thermoplastic or thermoset powder is electrostatically sprayed onto the part, then baked. The powder melts, flows, cures into a tough, glossy, color-fast skin. Reads as a uniform, deeply saturated paint — but harder than wet paint, more chip-resistant, and zero solvent.

Electrostatic spray of polymer powder (TGIC polyester, polyester-epoxy hybrid, urethane, or fluoropolymer) at ~80 kV onto a grounded part. Fluidized powder transfers via Coulomb attraction; thickness ~50–125 µm. Cure: 175–200 °C for 10–20 min in a batch oven (powder melts, crosslinks, flows level). Gloss level set by polymer chemistry — TGIC polyester reaches ≥85 GU at 60° (gloss-meter scale), the show-finish for outdoor architectural and recreation hardware. Color uniformity excellent; UV stability ranges from poor (epoxy) to outdoor-fade-resistant (super-durable polyester, fluoropolymer).

character — deep saturated color, hard glossy skin, slick, chip-resistant on impact.

Finish properties

  • levelpolished
  • subcategorythermosetting powder
  • applies tometal
Produced by processesPowder Coating

Second life

reversibilitymoderate — most coatings can be stripped chemically (methylene chloride for paint, NaOH for some powder coats) or thermally / mechanically (sandblasting). Some specialty coatings (DLC, ceramic) require commercial-service strip.
blocks substrate recyclingno
renewabilityfield- to shop-renewable — most paint and clear coats can be touched up or re-coated in service; powder coat and PVD coatings require a coating-house re-application.

SSPC / NACE surface-coating standards; manufacturer technical literature for the specific coating chemistry.

Citations