Silver plating offers the highest electrical conductivity of all metals. Unfortunately, it does not have the noble characteristics of gold and will form surface tarnish films, especially when exposed to sulfur bearing atmospheres. Silver has good solderability characteristics, even if the silver is somewhat tarnished. It is best suited for engineering purposes that require soldering, higher electrical and thermal conductivity, wear resistance of load bearing surfaces, and superior electrical contact. Silver also functions well as a connector finish in normal force, lower durability signal applications due to its low Contact Resistance values.
Engineered Silver Plating, which PEP General Metal Finishing provides, is deposited 99.9% pure. Standard specification callouts would be through standards QQ-S-365, ASTM B700, AMS 2410, AMS 2411, and AMS 2412.