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Ted Mooney, P.E. RET
Pine Beach, NJ
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for Metal Finishing since 1989
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Is there a good current comprehensive finish/substrate table available focused on corrosion resistance
Q. Would somebody please recommend a current comprehensive table (or tables) of reliable finish solutions for various base materials with the primary focus on corrosion resistance? I was hoping there would be a link to such a table. Or even various tables such as one for steel alloys, one for zinc alloys, one for aluminum alloys, copper, etc
Scott Brownproduct designer - Portland, Oregon USA
February 1, 2017
February 3, 2017 A. I don't think you find such a list. Jeffrey Holmes, CEF Spartanburg, South Carolina A. I don't believe there is such chart for electroplaters because there are many variables when plating iron to be corrosion resistant, like pre cleaning process, plating thickness, the closest you may find is the Galvanic corrosion chart for engineering purposes, not to be confused with the Galvanic series of metals, because on the galvanic series of metals copper is higher than nickel, but on the galvanic corrosion chart nickel is a better corrosion resistant coating. - Managua, Nicaragua February 3, 2017 ---- |
Q. Thanks for your responses guys. I don't know if it will help, but what if I were to say it is for automotive use and while our standard is 96 hours minimum SS resistance, our customers sometimes demand more. And we can focus primarily on steel, zinc, and aluminum alloys, with the latter two being die cast alloys. I'm not looking for a comprehensive list of every finish that might work, but how about the more widely used ones for such metals. Is there a chart that might answer this or is the spectrum still too wide?
Scott Brown [returning]- Portland, Oregon USA
February 3, 2017
A. There is an ASTM spec on electrolytic nickel/chrome plating for corrosion resistance on steel and copper alloys -- ASTM B456. It includes a description of five service conditions and what coating thicknesses are needed to meet those conditions for the different metals. Takes into consideration dull, bright, and semi-bright nickel and variations on chrome layer.
Jim Treglio - scwineryreview.com
PVD Consultant & Wine Lover
San Diego, California
February 9, 2017
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