Alternate to Zinc - Yellow Chromate

[MintJulep]

I have a mild steel part that I need to plate for corrosion protection.

In the past I would have gone for zinc plating with yellow chromate. Nowadays however, chromium is viewed as uncouth.

So, suggestions for alternates?

 

[kenvlach]

Lots of options, depending upon the application & requirements. E.g.,
Electroless nickel,
Co-Sn electroplating,
Trivalent Cr passivation of the zinc plating,
Lacquer over zinc,
Powder coating.

Some suggestions for passing 1000 hours of salt spray testing are at

http://www.finishing.com/384/36.shtml

You can also search other answers at this site, and get links to metal finishing chemical suppliers.

 

[BillPSU]

Depending on the part you could even galvanize some parts. Costs less and gives better protection.