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Business unit / dept.: Metal Deposition Solutions

AURUNA® 527 Barrel Gold-Plating Electrolyte

AURUNA® 527 Barrel Gold-Plating Electrolyte

Excellent Layer Thickness Distribution

AURUNA® 527 is a weakly acidic gold-nickel electrolyte with very good throwing power and layer thickness distribution, especially on hollow parts.

This makes the electrolyte perfect for use of bulk material in barrel and vibration coating systems. The interiors of cases or sockets often need to be gold-plated. The excellent throwing power therefore very positively influences the layer thickness distribution between the interior and exterior surfaces. This optimum distribution means gold can be saved.

The deposited layers have very good wear resistance, low contact resistance and impressive corrosion resistance.

Electrolyte characteristics

Electrolyte type

Weakly acid

Metal content

4 g/l (2 - 5 g/l)

pH value

4.4 (4.0 - 4.6)

Operating temperature

Room temperature (20 °C up to max. 28 °C)

Current density range

0.3 A/dm² (0.1 - 0.5 A/dm²)

Plating speed

Approx. 0.05 μm/min (0.02 - 0.11 μm/min)

Coating characteristics

Coating

Gold-nickel (approx. 0.15 wt.% Co)

Purity

Approx. 99.8 % Au

Colour of deposit

Light yellow

Hardness

Approx. 150 HV 0.025

Density of the coating

Approx. 17.5 g/cm³

Classification

ASTM B 488-01 Type 1, Code C (equivalent to Type 1, Grade C in accordance with MIL-G-45204 C)

Advantages

  • Save gold due to optimal coverage of hollow parts
  • Excellent throwing power
  • Long-term stability in permanent operation
  • Layers are classified in accordance with: ASTM B-488-01: Type 1, Code C

Applications

  • Bulk and barrel parts
  • Pin, spring and plug contacts
  • Contact sockets

Downloads

  • Produktblatt_AURUNA_527_EN.pdf
    Download

Your contact person

Markus Legeler

Markus Legeler

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

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