Process	Gold/silver and other precious metal plating Silver-plating is used for decoration, and for providing with good reflection, electrical and thermal conductivity, corrosion and wear resistance, solderability, the surfaces to be coated. Gold plating is used in the electronic industry against oxidation and corrosion; for decoration in many colour variants. It is carried out through either basic, neutral or acid electrolytes. Platinum is used in thin layers for cars sparking plugs. Palladium is the cheapest precious metal and it's used for electrical contacts in place of gold. Rhodium is 10 times more expensive than gold, supplies high hardness and wear resistance. Usually it's a thin layer covering previous Ag, Ni-layers.
Danish Name	Elektrolytisk udfældning af ædelmetaller
Category	Surface coatings, Electrodeposited coatings
Materials	Coating materials:, Ag, Au, Pt, Rh, Pd
Typical products	Water tap (Au) Watch case (Au) Cutlery (Ag) Printed circuit (Au) Electric contacts Conductor Drive shaft
References	Arbeitsgemeinschaft der Deutschen Galvanotechnik, (Germany)
Price notes	DKK/part 5 parts 100 5000 Small (1cm2) 85/85 11/11.5 0.074/0.40 Medium (1dm2) 115/148 22/52 2/35 Large (100dm2) 380/3550 265/3450 200/3400
Price date	01-11-96
Price notes	The first price on the cell refers to silver-plating, the second one to gold-plating. Over 5000 parts the price doesn't vary so much. The price is calculated for typical average thichnesses: 12.5 micron (Ag); 1.75 micron (Au).
Additional info	The cost of the material is the most important factor for gold-plating pricing. For silver-plating is the labour, even if, for large parts, material's cost becomes a variable to be taken into consideration.