Zinc Clear Chromate

Tommy garza quality technician austin texas usa.

Zinc clear chromate.

Citation needed the protective effect of chromate coatings on zinc is indicated by color progressing from clear blue to yellow gold olive drab and black. Link to spec at techstreet type 3 sc 2 sheet is crs 1010 1020 060 thick. Is there any research on a comparison of zinc plating with different chromates. The second step is to treat the plated metal with a chemical passivate which adds color.

In general please give me your thoughts on yzp vs clear zinc i really appreciate you taking the time to help us out. Yellow and clear sometimes called white essentially perform the same function as a superior corrosion inhibitor for your metal parts. It is used industrially in chromate conversion coatings having been developed by the ford motor company in the 1920s. 60 000 q a topics education aloha fun topic 2233 clear vs.

Dichromates were originally used as primers for paint until their natural appeal was realized. Zinc chromate zn cr o 4 is a chemical compound containing the chromate anion appearing as odorless yellow powder or yellow green crystals but when used for coatings pigments are often added. Zinc trivalent dichromate plating provides a similar finish to the hexavalent finish with the added benefit of rohs compliance. Zinc dichromate plating provides additional protection for corrosion vs.

Our zinc and chromate finishes are rohs compatible. 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. Zinc plating in general can be broken into two primary steps. Zinc dichromate remains a superior chromate for primer applications.

The deposit is a pleasing finish in itself however it is also an excellent base for paint. Trivalent dichromate conversion coating is a type of coating used to passivate zinc cadmium copper silver magnesium and tin alloys. These solutions are referred to as chromates hex chrome or passivates tri chrome. Zinc plate with clear chromate per astm b633 affil.

What is clear zinc plating. The first step is to add the zinc plating through the use of electrical current. Yellow or clear zinc chromate coatings. Because zinc is a more active metal.

Will you supply us with a statement on letterhead stating that the clear zinc chromate will have equal or greater salt spray resistance as the yellow zinc chromate. The iridescence in a dichromate conversion can display different iridescent hues. This is a major project that we are undertaking. I believe it is astm b201 80 affil.

Yellow chromate should get 96 hrs to failure. Type iii refers to a clear blue brite chromate passivate.