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Tin plating testing points





November 2, 2008

Dear sir ,
We are procuring tin plated copper from different suppliers. I want to know what are the testing 1).parameters 2).points and 3).process of tin plated finish by which we can insure OK finish of tin plating.
thanks
Regards,

Arjun Singh
plating shop employee - India



November 4, 2008

Hi, Arjun. Can you please elaborate your situation a bit? I'm having trouble understanding it. You are a plating shop employee, but your plating shop is buying tin plated copper elsewhere? The parameters, point and process of tin plating all depend on the function. For example, you would try to avoid bright tin if you are soldering it, but would probably prefer bright tin if you are not. There are several acid processes and at least one alkaline process. Please get back to us with your situation.

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey



November 7, 2008

DEAR SIR,TIN IS WHITE METAL.
ONE IS ALKALINE TIN WHICH GIVES MATTE FINISH,ANOTHER IS ACID TIN WHICH GIVES BRIGHT FINISH.
NORMALLY WE HAVE TO CHECK THICKNESS AND PHYSICAL APPEARANCE.
BOTH OF THESE HAVE TO BE PRE-SPECIFIED.
REGARDS,

ajay raina
Ajay Raina
Ludhiana, Punjab, India



November 12, 2008

Ajay,
Like Ted, I'm not exactly sure what you are looking for here. The thickness of both tin finishes (bright and matte) would depend on the end use. Is the matte tin going to be soldered? What type of atmosphere are the plated products going to be placed? Will the product be subjected to heat, humidity, salt environments? I could say you need 8 microns of tin plated thickness, that may be too low or too high. The company that supplies this plated material for you should know all these things (and probably more) before you procure it. If we know some of the details we can help you more. I'm sure some of our responders have plated similar products for a respective end use.

Mark Baker
Process engineer - Syracuse, New York


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