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Electronics Forum / Basics / July 2007Electroplating material ?
Can anyone please answer this, and/or point me to a website that gives some details ? What is that yellowish finishing that is usually given to a steel-based chassis for electronic products ? I assume that it is electroplated on for rust protection and solderability. Specifically, what is the plating material ? Tin ? > Can anyone please answer this, and/or point me to a website > that gives some details ? [quoted text clipped - 3 lines] > electroplated on for rust protection and solderability. > Specifically, what is the plating material ? Tin ? It might be cadmium, but I don't really know for sure. I would suggest not welding it nor eating off it. Chris > Can anyone please answer this, and/or point me to a website > that gives some details ? [quoted text clipped - 3 lines] > electroplated on for rust protection and solderability. > Specifically, what is the plating material ? Tin ? Zinc. The colour is a passivation finish. In olden days it was Cadmium. You won't get that now. Plenty of old drawings called up 'Cad & Pass'. These days I use 'Zinc & clear'. Or actually more likely I use Zintec (tm) electro-galavanised material. Graham > Can anyone please answer this, and/or point me to a website > that gives some details ? [quoted text clipped - 3 lines] > electroplated on for rust protection and solderability. > Specifically, what is the plating material ? Tin ? Perhaps zinc chromate: http://www.epi.com/metal-finishes/zinc-chromates.html#EChromeYellowDye > pawi...@yahoo.com wrote: > > Can anyone please answer this, and/or point me to a website [quoted text clipped - 6 lines] > > Perhaps zinc chromate:http://www.epi.com/metal-finishes/zinc-chromates.html#EChromeYellowDye Thanks, everyone. Now I have some basis do some research on the net. > Can anyone please answer this, and/or point me to a website > that gives some details ? [quoted text clipped - 3 lines] > electroplated on for rust protection and solderability. > Specifically, what is the plating material ? Tin ? when I was working at a truck parts factory they called it gold passivation, dunno if adjective or noun.  SignatureBye. Jasen >> Can anyone please answer this, and/or point me to a website >> that gives some details ? [quoted text clipped - 6 lines] > when I was working at a truck parts factory they called it gold > passivation, dunno if adjective or noun. An adjective, probably. Zinc chromate has that color, and costs a lot less than gold. About the only place you'd find metallic gold in a truck is as plating on electrical contacts in embedded computers. >> Can anyone please answer this, and/or point me to a website >> that gives some details ? [quoted text clipped - 6 lines] > when I was working at a truck parts factory they called it gold > passivation, dunno if adjective or noun. As in these "Goldscrews" http://www.screwfix.com/app/sfd/cat/cat.jsp?cId=A331379&ts=34348 It's chromate passivated, improves the corrosion resistance and looks nice. But no Au involved. |
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