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Metal finishing Q&As since 1989
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Solutions for testing the presence of hard chrome on materials
I am looking for a test that will determine the presents of hard chrome on hardened steel material sometimes it hard to tell if it's polished or hard chrome? Can anyone help ?
Tony A Newman- OKC. Oklahoma USA
2006
A drop of hydrochloric (muriatic) acid will react with chrome dissolving it with release of bubbles, a green salt and leaving it dull in a matter of 1 min or less. No visible action or change on steels.
Guillermo MarrufoMonterrey, NL, Mexico
2006
You can use a copper sulphate ⇦[this on eBay or Amazon affil links] solution. An indication of red colour on steel. Good luck .
![Cair Shishani](../portraits/khair_shishani.jpg)
Khair Shishani
aircraft maintenance - Al Ain, UAE
2006
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