Zinc Yellow Chromate Plating

Liquid concentrate is used at 0 5 to 3 by volume in water at 65 to 90 f.

Zinc yellow chromate plating.

Trivalent yellow and hexavalent yellow. Zinc dichromate plating provides additional protection for corrosion vs. The zinc the chromate react to form the new colors. I am trying to persuade our engineering department to allow us to make the switch to have our hardware clear zinc plated.

The iridescence in a dichromate conversion can display different iridescent hues. Zinc dichromate remains a superior chromate for primer applications. A discussion started in 2011 but continuing through 2018. Our unique trivalent yellow passivate is ideal for our customers who require their products to be ultraviolet uv stable as our coatings do not contain dye.

Color can vary from colorless to iridescent yellow brown. If you were specifying zinc with clear chromate you would have to specify type i. The finish has outstanding resistance to salt spray greatly surpasses the normal 96 hour salt spray resistance specified for yellow chromates on zinc. Yellow zinc plating vs.

Zinc trivalent dichromate plating provides a similar finish to the hexavalent finish with the added benefit of rohs compliance. I was hoping to reach out to you to help me with this research. Great lakes metal finishing inc has two zinc yellow plating options. To improve those older zinc pot metal.

These hues can appear to be yellow green red blue and etc. Yellow chromate solution 4oz. Coatings shall be continuous free from. Trivalent dichromate conversion coating is a type of coating used to passivate zinc cadmium copper silver magnesium and tin alloys.

Iridescent yellow chromate after preparing the part to accept the process the part is simply dipped into a solution for a few minutes. 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. Some of our metal finishes include anodizing chromating zinc plating electroless nickel plating tin plating wet paint and powder coating. Steel parts requiring embrittlement relief after plating are baked according to industry standards.

The yellow chromate is a yellow bronze iridescent finish on plated cadmium and zinc. Plating specifications general information page 8 reference only april 2018 chemical film chromate mil c 5541 coatings for aluminum zinc silver and cadmium.