Paint, powder & polymer coatings · finish comparison
Epoxy Coating vs Powder Coating
Epoxy Coating and Powder Coating are both paint, powder & polymer coatings finishes; powder coat is the lower-cost option ($$).
Epoxy Coating
Paint, powder & polymer coatings · $$$ · instant quote
Epoxy coating is a crosslinked protective film valued for adhesion, chemical resistance, and barrier protection.
Powder Coating
Paint, powder & polymer coatings · $$ · instant quote
Powder coating electrostatically deposits dry thermoset powder on conductive parts and melts it into a continuous film.
When to choose which
Choose Epoxy coat
Epoxy coat is the pick when its strengths below matter more than Powder coat's.
- Strong adhesion to correctly prepared metal
- Typical v1 dry-film range is 50–200 µm
- Good barrier resistance to water and many industrial chemicals
Choose Powder coat
Choose Powder coat when an oven-cured decorative metal finish is preferred.
- Typical finished film is 50–150 µm
- No liquid solvent is needed for film formation
- Tough decorative coverage suits fabricated metal
What the numbers say
- Powder coat is the lower-cost option ($$).
- Powder coat tolerates more heat (150 °C continuous).
Scores side by side
Each score is 0–100 against every finish in this catalog. Corrosion is derived from salt-spray test duration and surface hardness from the finish layer's Vickers hardness where a measured figure exists; a finish that leaves the base metal's own surface is not rated for hardness. Cosmetic, lubricity and cost are FabDigit's engineering assessment. Scores and typical figures are screening data, not matched side-by-side tests or service-life rankings; ASTM B117 is a controlled salt-fog method, not a field-life prediction.
| Score | Epoxy coat | Powder coat |
|---|---|---|
| Corrosion resistance | 83 Very good | 83 Very good |
| Surface hardness / wear | 15 Low | 14 Minimal |
| Cosmetic quality | 55 Good | 85 Excellent |
| Lubricity | 15 Low | 15 Low |
| Cost | 40 $$$ | 25 $$ |
Key numbers
| Property | Epoxy coat | Powder coat |
|---|---|---|
| Thickness | 50–200 µm | 50–150 µm |
| Salt-spray test duration | 500–1,000 h | 500–1,000 h |
| Max service temperature | 120 °C | 150 °C |
| Electrical | Insulating | Insulating |
| Colours | gray, black, white, custom color, clear | RAL colors, custom color, clear |
| Relative cost | Premium ($$$) | Standard ($$) |
| Added lead time | 3–7 working days | 3–7 working days |
| RoHS | Compliant | Compliant |
| Instant quote | Yes | Yes |
Bold marks the side that is ahead on a row where more (or less, for cost and lead time) is better. Ranges are the typical specification window; the drawing call-out fixes the class.
Which materials take each finish
| Material family | Epoxy coat | Powder coat |
|---|---|---|
| Aluminum | Yes | Yes |
| Steel | Yes | Yes |
| Brass | With care | With care |
| Copper Alloy | With care | With care |
| DMLS / SLM | With care | With care |
| Magnesium Alloy | With care | With care |
| Stainless Steel | With care | With care |
| Titanium | With care | With care |
| Zinc Alloy | With care | With care |
| FDM | Limited | Limited |
| MJF | Limited | Limited |
| Polymer | Limited | Limited |
| SLA | Limited | Limited |
| SLS | Limited | Limited |
Epoxy coat vs Powder coat — frequently asked
What is the difference between Epoxy coat and Powder coat?
Epoxy Coating and Powder Coating are both paint, powder & polymer coatings finishes; powder coat is the lower-cost option ($$). Powder coat tolerates more heat (150 °C continuous).
When should I use Epoxy coat instead of Powder coat?
Conversely: choose Powder coat when an oven-cured decorative metal finish is preferred.
Is Epoxy coat or Powder coat cheaper?
Powder coat is the lower-cost finish ($$ against $$$ for Epoxy coat) among the finishes FabDigit quotes. Both are priced per part with a lot minimum; the exact figure appears on the instant quote once the part is uploaded.
Do Epoxy coat and Powder coat protect equally against corrosion?
On paper, yes: both are rated 500–1,000 h in neutral salt spray (ASTM B117 or the qualification hours of the governing specification). In service the difference comes from sealing, thickness class and the substrate alloy rather than from the choice between the two.