They are used for power and data transmission in sensor technology and in rotating systems such as wind power generators and MRTs, where they are used as sensor or lead-in wires or as sliding contacts, mostly made of gold and platinum alloys.
The combination represents the advantage of these wires: Heraeus uses the best properties of non-precious metals (e.g. elastic properties) and combines them with the benefits of precious metals (e.g. conductivity, abrasion resistance, resistance to corrosion). The layer of precious metal is proportionately smaller than the core. Compared to a solid precious metal wire, the cost is therefore significantly lower.