AURUNA® 215 Pale Gold


AURUNA® 215 Pale Gold Iron Indium Electrolyte
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

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