Zinc Chromate Plating Specifications

Below is a list of specifications that are most often provided by techmetals.

Zinc chromate plating specifications.

Specifically for the following coatings. Trivalent yellow meets automotive and rohs specifications. A discussion started in but continuing through 2018. 90040 plating specifications for nickel chrome zinc we at valley plating works inc feel that customer satisfaction is our number one priority.

Techmetals also offers r d optical coatings medical coatings large id od grinding areas with 20 ton capacities. We also offer metal plating solutions to additional specifications such as ams mil astm sae and customer specifications. Yellow can be used as is or as a paint base. I am in need of as much information as i can get about the chemical composition of coatings.

Plating specifications general information page 8 reference only april 2018 chemical film chromate mil c 5541 coatings for aluminum zinc silver and cadmium. 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. Specs for chromate zinc coatings 2002 q. 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.

Steel parts requiring embrittlement relief after plating are baked according to industry standards. Valley plating works inc. We also currently do hexavalent and trivalent yellow zinc plating. Astm b633 sc1 type ii scope this specification covers electrodeposited zinc coatings as applied to steel copper brass and bronze parts to protect them from corrosion.

Astm b 633 type ii vs. Advantages of clear zinc plating. As a rule the darker the chromate the more corrosion resistant the finish with the same amount of plated thickness. We are getting poor coverage on the as cast surface of some steel castings using a yellow zinc chromate.

Zinc plus yellow hexavalent free chromate part suffix zc. 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. Color can vary from colorless to iridescent yellow brown. It also offers some benefits in terms of strength and abrasion resistance.

Zinc plating with clear passivation gives all the same advantages of any other zinc plating particularly the addition of considerable corrosion resistance. Coatings shall be continuous free from.