Zinc Yellow Chromate Plating Specifications

Valley plating works inc.

Zinc yellow chromate plating specifications.

Zinc plating plus yellow chromate coating on steel sae j81 zinc plate and yellow zinc dichromate coating to meet ford wsb m10p10 a3 and wsd m1p85 a2 on aisi 12l14. Plating specifications general information page 8 reference only april 2018 chemical film chromate mil c 5541 coatings for aluminum zinc silver and cadmium. I am in need of as much information as i can get about the chemical composition of coatings. We also currently do hexavalent and trivalent yellow zinc plating.

Coatings shall be continuous free from. Type ii refers to a colored yellow olive drab chromate. Specs for chromate zinc coatings 2002 q. If you were specifying zinc with clear chromate you would have to specify type i.

Trivalent yellow meets automotive and rohs specifications. No matter the plating thickness bake cycle chromate or salt spray requirement glmf will deliver exactly what is required to meet your specifications. As a rule the darker the chromate the more corrosion resistant the finish with the same amount of plated thickness. I believe it is astm b201 80 affil.

The majority of the work performed at glmf is plated to a customer s individual zinc or zinc nickel plating specifications. Specifically for the following coatings. Steel parts requiring embrittlement relief after plating are baked according to industry standards. Yellow chromate should get 96 hrs to failure.

Yellow can be used as is or as a paint base. Type iii refers to a clear blue brite chromate passivate. Yes zinc and yellow dichromate per astm b633 type ii fe zn 12 is a good way to specify plating on a part print type ii is for colored chromates like zinc yellow. Link to spec at techstreet that states you should get at least 24 hrs to white corrosion from a single dip clear blue brite chromate in a salt spray cabinet.

Specifications thickness comments qq n 290a class 1 grade e class 1 grade f class 1 grade g 0006 min 0004 min 0002 min. 90040 plating specifications for nickel chrome zinc we at valley plating works inc feel that customer satisfaction is our number one priority. Zinc should be deposited directly on the base metal nickelis permissible undercoat if base metal is a corrosion resisting steel parts having a hardness greater that rc 40 must be given a heat treatmentprior to plating. Zinc plus yellow hexavalent free chromate part suffix zc.

Color can vary from colorless to iridescent yellow brown. Springs having a hardness over rc 40 must be given anafter plating baking of 375 25 f for 3 hours.