Finishing
Powder Coating vs Wet Painting
Powder coating gives a thick, durable, low-VOC finish cured in an oven; wet paint offers thinner films, unlimited color matching, and coats heat-sensitive or oversized parts. Durability versus flexibility.
| Powder Coating | Wet Painting | |
|---|---|---|
| Application | Electrostatic dry powder, oven cured | Sprayed liquid, air or bake cured |
| Film thickness | 50 to 125 microns | 15 to 50 microns |
| Durability | High, chip and corrosion resistant | Moderate |
| VOCs | Very low | Higher, solvent based |
| Color and finish range | Wide, some limits on custom | Unlimited color matching |
| Heat sensitivity | Part must survive ~200 C cure | Works on heat-sensitive parts |
| Cost at volume | Lower, high transfer efficiency | Higher waste, more coats |
Choose Powder Coating when
- Durable, thick, corrosion-resistant finish at volume
- Metal parts that tolerate oven curing
- You want low VOCs and high material efficiency
Choose Wet Painting when
- Exact custom color matching or thin films
- Large, assembled, or heat-sensitive parts
- Low volumes or touch-up work
The verdict
Powder coat metal parts that fit an oven when you want durability and low waste at volume; use wet paint for precise color matching, thin films, or parts too large or heat sensitive to cure.
Cost comparison
Powder transfer efficiency runs 60 to 70 percent with overspray reclaim, against 30 to 50 percent for wet spray with no reclaim, so powder material cost per square meter is usually lower at volume. Wet paint avoids the oven, so its energy cost is lower for small batches. The crossover favors powder once parts flow steadily enough to keep the cure oven loaded.
Common questions
Is powder coating more durable than paint?
Generally yes. Powder coating forms a thicker, more impact and corrosion resistant film than most wet paints, though high-end automotive wet finishes can rival it for appearance.