・Non-cyanide, acidic silver-tin alloy plating bath.
・Obtain from matt to semi bright appearance which has 20 to 40 % of tin deposition rate.
・Much improve on sulfidation resistance compared to pure silver plating.
・Deposition film hardness can be controlled by changing deposition rate of tin.
・Deposition film hardness: Tin 20% approx. 180Hv, Tin 40% approx. 110 Hv,
・Strike silver plating is necessary.