ZN Section »
Finishes
Zinc Die casting Finishes
One of the most attractive qualities of zinc die castings is their ready acceptance of a wide range of finishes. Finishes can bring three advantages:-
- Provide high quality decorative finish
- Increase corrosion resistance
- Improve wear resistance
| Chemical Finishes |
Properties |
| Chromate & Passivate |
Low cost corrosion protection (clear, gold, olive drab) |
| Phosphates |
Non-conductive pre-coat for organic finishes |
| Anodising |
Excellent corrosion and wear resistance |
| Antique Finish |
Decorative appearance, oxidising of metallic finishes - copper, brass |
| PTFE |
Sprayed on finish with excellent wear and protection |
| Metallic Finishes |
Properties |
| Brass |
Decorative finish, can be lacquered for durability |
| Cadmium |
Excellent corrosion resistance, good appearance |
| Chromium |
Bright with very good corrosion and wear resistance, high quality bright finish |
| Black |
Very good with decorative, corrosion and wear resistance |
| Hard chrome |
Excellent wear resistance - hardness 850 - 1100 H |
| Copper |
Decorative finish |
| Gold |
Decorative finish |
| Nickel |
Decorative finish, fair corrosion resistance and durability |
| Silver |
Decorative finish, high resistance to many chemical and foodstuffs |
| Tin |
Good corrosion resistance, easily soldered |
| Zinc & Passivate |
Good corrosion resistance, decorative bright appearance at low cost |
| Organic Finishes |
Properties |
| Deltatone |
Excellent corrosion resistance, up to 1000 hours Salt Spray, black or silver |
| Deltaseal |
Good corrosion resistance, available in a range of colours |
| Eletrophoretic |
Good corrosion resistance, decorative finish |
| Lacquer |
Good corrosion and wear resistance, decorative finish in many colours |
| Albrufin |
Decorative lacquer, brass and gold coloured, good general resistance |
| Paints Acrylic |
Good outdoor durability, chemical and heat resistant, requires a primer |
| Epoxy |
Good corrosion resistance, widely used, often primer coat, avoid sunlight |
| Polyester |
High gloss appearance, resists weathering, with good hardness |
| Polyurethane |
Good chemical and wear resistance, gives high colour retention |
