The difference between tin-plating and silver-flashing?
My company uses copper bus bar in its process. We manufacture medium voltage motor starters and motor controllers. This bus bar must be plated. We have used both tin-plating and silver-flashing. My question is; a)Which is better for both corrosion-resistance and electrical conductivity, tin plating or silver flashing? Also, b) How can the two be identified? Is there an easy method of determining which bus bars are silver-flashed and which are tin-plated?Edward Doyle
Benshaw, Inc. - Glenshaw, Pennsylvania, USA
Tin and silver have previously been compared for a similar application in letter 10574. As for a simple way to tell one from the other, though, I'd like to hear that answer myself.
Ted Mooney, P.E.
Pine Beach, New Jersey
Silver Flashing provides better corrosion resistance.
Hall Plating Co. - McAllen, Texas
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