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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Need chemical compositions of Electrolytic chrome plating

2005

Hai

I am an IMDS engineer, and I want some of chemical compositions of materials

Urgently I want the chemical composition of electrolytic chrome plating

This is the urgent requirement, Please reply me as soon as possible.

Raghavendra Upadhya
Rapid Global Business Solutions India Pvt. Ltd - Bangalore, Karnataka, India

"Chemistry of the Elements"

on AbeBooks

or Amazon

(affil links)

2005

Hello Raghavendra. Chrome plating is essentially chromium metal, with some contaminants. However, when most people speak of chrome plating they mean decorative nickel-chrome plating, which consists of a relatively heavy layer(s) of nickel underneath a thin (less than a micron) layer of chromium. It is difficult to know exactly what you want.

Please never rely on this public forum for an "urgent requirement" for information as the operators do not intend or want it it to be used for that purpose, and demanding that the readership be mobilized instantly to address your needs is significantly harder than herding cats. Free and urgent are opposites :-)

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

2005

As stated by you, the make up of chrome is 99.9+++% chromium metal with a valence state of zero.
The most common plating bath (but far from the only one) is water, chromic acid and sulfuric acid.
If you are really asking how much hexavalent chrome is in the part, that is zero%. If you are asking how much hex chrome is on the part, that is highly variable, depending on surface finish, shape and quality of rinsing/neutralization.

James Watts
- Navarre, Florida

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