ROSE GOLD ELECTROLYTE
AURUNA® 502 is a neutral, cadmium-free gold copper electrolyte working without free cyanide. The red surfaces are bright, very hard and abrasion-resistant. AURUNA® 502 is mainly used for decorative coatings, but it is suitable for technical applications such as slip rings as well. As gold-saving, low-carat layers, the surface exhibits very good corrosion and tarnish resistance. The gold copper electrolyte can be used for rack and barrel plating, it can deposit layers of up to max. 10 μm in thickness.
Advantages
• Gold-saving coatings (approx. 18 ct)
• Cadmium-free
• Red gold-copper layers
• Resistant to tarnishing and corrosion
• Maximum layer thickness approx. 10 μm
• High hardness (380 - 400 HV), abrasion-resistant
• Suitable for rack and barrel
Applications
• Accessories
• Jewellery
• Watches
• Bathroom fittings
• Lighting
• Spectacle frames
• Writing implements
• Slip rings
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Electrolyte type |
Neutral |
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Coating |
Gold-copper |
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Metal content |
4 (3.5 - 4.5) g/l Au 3 (2.5 - 3.5) g/l Cu |
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Alloy composition |
75 wt.% Au |
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pH value |
7.5 (7.2 - 8.0) |
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Colour of deposit |
Red |
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Operating temperature |
57 (55 - 60) °C |
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Brightness |
Bright |
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Current density range |
0.5 (0.3 - 0.8) A/dm² |
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Hardness of deposit |
380 - 400 HV |
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Plating speed |
Approx. |
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Max. coating thickness |
Approx. 10 μm |
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Anode material |
Pt-Ti (type PLATINODE Pt/Ti) |
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Density of the coating |
Approx. 15 g/cm³ |
