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AURUNA® 504 Rose Gold Electrolyte

AURUNA® 504 Rose Gold Electrolyte

Gold-saving gold-copper coatings for decorative and technical applications

AURUNA® 504 is an alkaline electrolyte for the deposition of red gold-copper alloy coatings with a caratage of 16 - 18 carat. The process, which is based on gold(I) cyanide and free cyanide, is suitable for both decorative and technical applications. It is characterized by high electrolyte stability and easy operation.

The layers are ultra-bright, highly ductile, hard and abrasion resistant. As low-carat gold-saving coatings, they also exhibit very good corrosion and tarnish resistance.

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Electrolyte characteristics

Electrolyte type

Alkaline

Metal content

4 (3 - 5) g/l Au, 30 (28 - 32) g/l Cu

pH value

11 (10.5 - 11.5)

Operating temperature

68 (66 - 70) °C

Current density range: Rack operation

0.7 (0.5 - 0.9) A/dm²

Current density range: Barrel operation

0.25 (0.2 - 0.5) A/dm²

Plating speed

approx. 0.25 μm/min at 0.5 A/dm², approx. 0.34 μm/min at 0.7 A/dm², approx. 0.43 μm/min at 0.9 A/dm²

Deposition rate

approx. 68 mg/Amin at 0.7 A/dm²

Coating characteristics

Coating

Gold copper

Caratage

16 - 18 carats

Purity

67 - 75 wt.% Au, 25 - 33 wt.% Cu

Colour of deposit

Red

Brightness

Ultra-bright

Hardness of deposit

approx. 320 HV

Density of the coating

approx. 14 g/cm³

Advantages

  • Gold-saving coatings (16 - 18 kt)
  • High electrolyte stability
  • Tarnish and corrosion resistant
  • Hard, abrasion resistant coatings
  • Highly ductile

Applications

  • Jewelry
  • Watches
  • Accessories
  • Bathroom fittings
  • Lighting
  • Spectacle frames
  • Writing utensils
  • Sliprings

Downloads

  • Produktblatt_AURUNA_504_EN.pdf
    Download

Your contact person

Markus Legeler

Markus Legeler

Manager Sales International
T: +49 7171 607 204
F: +49 7171 607 316
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