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Business unit / dept.: Metal Deposition Solutions

ARGUNA® 635 Hard Silver Electrolyte

ARGUNA® 635 Hard Silver Electrolyte

For brilliant coatings

The silver electrolyte ARGUNA® 635 is used for the deposition of bright silver coatings for technical and decorative applications. Despite a low alloy content, a high hardness of up to 150 HV is possible and the coatings can be classified according to ASTMB700 type 2.

Compared to fine silver, the electrolyte impresses with improved abrasion behavior and increased vibration resistance. Depending on the working parameters, the electrolyte is suitable for continuous, rack and barrel processing. It can also be used to deposit thick coatings with a glossy finish.

The coatings have very good electrical properties and a permanently high coating hardness.

Electrolyte characteristics

Electrolyte type

Alkaline-cyanide

Metal content

40 g/l Ag, 50 g/l KCN

pH value

>13

Operating temperature

20 - 25 °C

Current density range: Rack operation

0.5 - 5 A/dm²

Current density range: Barrel operation

0.5 - 2 A/dm²

Plating speed

1 μm in 1.5 min at 1 A/dm²

Coating characteristics

Coating

Hard silver

Alloy composition

approx. 99 wt.% Ag

Colour of deposit

white

Brightness

Bright, brilliant

Hardness of deposit

Directly after plating: approx. 170 - 190 HV, After heat treatment: approx. 130 - 150 HV

Max. coating thickness

> 50 μm

Density of the coating

10.5 g/cm³

Advantages

  • Very good electrical properties
  • Permanent high hardness
  • Improved abrasion behavior
  • Suitable for rack and barrel products

Applications

  • Connectors
  • Electrical contacts
  • Stressed silver surfaces

Downloads

  • Produktblatt_ARGUNA_635_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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