AURUNA® 215 Pale is a colour gold alloy electrolyte for decorative applications, preferably for parts coming into contact with the skin such as jewelry and watches. The essential advantage of the...
Proven electrolyte with new color scheme
AURUNA® 215 Pale is a colour gold alloy electrolyte for decorative applications, preferably for parts coming into contact with the skin such as jewelry and watches. The essential advantage of the coatings is their freedom from nickel and cobalt, excluding skin allergies caused by these metals.
The process has already been proven for many years. By changing the parameters, we can now also achieve a pale yellow color (1N). The weakly acidic gold electrolyte is easy to operate and suitable for rack and barrel.
Electrolyte characteristics
| Electrolyte type | weakly acidic |
| Metal content | 1.5 (1.3 - 1.7) g/l Au, 0.5 (0.4 - 0.6) g/l Fe, 1.0 (0.8 - 1.2) g/l In |
| pH value | 4.0 (3.8 - 4.5) |
| Operating temperature | 45 (40 - 50) °C |
| Current density range | 2.5 (2.0 - 3.0) A/dm² |
| Plating speed | approx. 0.11 μm/min at 2,5 A/dm² |
| Deposition rate | approx. 7,8 mg/Amin at 2,5 A/dm² |
Coating characteristics
| Coating | Gold iron indium |
| Purity | approx. 96% Au, approx. 3,5% Fe, approx. 0,5% In |
| Colour of deposit | pale yellow |
| Hardness | approx. 220 HV |
Advantages
- Weakly acidic colour gold electrolyte
- Pale yellow coatings
- Colour-constant across a wide operating range
- Uniform colour
- For decorative applications
- Non-allergenic since free of nickel and cobalt
- The coatings are RoHS compliant
- Suitable for rack and barrel
Applications
- Jewelry
- Watches
- Spectacle frames
- Writing implements
- Accessories
