Zinc Chromate Plating Specifications

Advantages of clear zinc plating.

Zinc chromate plating specifications.

I am in need of as much information as i can get about the chemical composition of coatings. Zinc plating with clear passivation gives all the same advantages of any other zinc plating particularly the addition of considerable corrosion resistance. Astm b 633 type ii vs. We also currently do hexavalent and trivalent yellow zinc plating.

Springs having a hardness over rc 40 must be given anafter plating baking of 375 25 f for 3 hours. Yellow can be used as is or as a paint base. Color can vary from colorless to iridescent yellow brown. Trivalent yellow meets automotive and rohs specifications.

We are getting poor coverage on the as cast surface of some steel castings using a yellow zinc chromate. 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. Specs for chromate zinc coatings 2002 q. 90040 plating specifications for nickel chrome zinc we at valley plating works inc feel that customer satisfaction is our number one priority.

Zinc plus yellow hexavalent free chromate part suffix zc. Specifically for the following coatings. P 1265 the coating serves as a corrosion inhibitor as a primer to improve the adherence of paints and adhesives as a decorative finish or to preserve electrical conductivity. As a rule the darker the chromate the more corrosion resistant the finish with the same amount of plated thickness.

We also offer metal plating solutions to additional specifications such as ams mil astm sae and customer specifications. A discussion started in but continuing through 2018. 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. It also offers some benefits in terms of strength and abrasion resistance.

Valley plating works inc. Steel parts requiring embrittlement relief after plating are baked according to industry standards. Coatings shall be continuous free from. Below is a list of specifications that are most often provided by techmetals.

Chromate conversion coating or alodine coating is a type of conversion coating used to passivate steel aluminium zinc cadmium copper silver titanium magnesium and tin alloys. Techmetals also offers r d optical coatings medical coatings large id od grinding areas with 20 ton capacities.