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+--- Thread: Discoloured Stainless Steel (/showthread.php?tid=7145)
Discoloured Stainless Steel - Magnus - 10-18-2006
A friend of mine owns a metal lathe and was working some stainless steel bar, and due to the heat it turned an interesting rosey copper colour. I know brass and other metals do the same...will a 50/50 vinnegar water solution get rid of the discolouration?
Re: Discoloured Stainless Steel - LUCIUS ALFENUS AVITIANUS - 10-18-2006
Vinegar is a acid (acetic). We can use it to clean the surfaces of the heat coloured metals. Jewellers use more strong acids in a low concentration (sulfuric, etc...) but probably it's more dangerous.
I use vinegar without disolution. When the metal is clean, clean the piece with bicarbonate, to neautralize the acid action, and then dry the piece.