Gold's Electrical Conductivity
Why gold is valuable at electrical interfaces even though silver and copper are better bulk conductors.
Why this topic matters
Why gold is valuable at electrical interfaces even though silver and copper are better bulk conductors. Gold is normally used only where its particular surface, electrical, optical or chemical behaviour adds enough value to justify the material.
How gold fits the system
Silver and copper have higher bulk electrical conductivity than gold. Gold's industrial advantage is often the stability of an exposed contact surface because it resists oxidation.
Material tradeoffs
Bulk copper or silver can outperform gold on conductivity or price, so industry normally uses gold selectively at surfaces, contacts or very small features.
Manufacturing and quality
Specifications should define purity or alloy, dimensions, surface condition and the environment instead of relying on the word “gold” alone.
Lifecycle and recycling
Material efficiency comes from thin layers, selective placement, long service life and recovery of manufacturing scrap.