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Silver colored contamination after handling stainless steel parts

Silver colored contamination after handling stainless steel parts

Silver colored contamination after handling stainless steel parts

(OP)
After giving the white glove treatment to several small machined stainless steel parts, dark silver colored contamination was present on my hands?

Any idea of what could be causing this? I have one idea that it could be free iron. Does anyone have any experience with this?

RE: Silver colored contamination after handling stainless steel parts

This is some sort of machining debris. It would be a good idea to examine under high magnification; a lot of SS alloys do not machine smoothly, but sharper tooling may help.

I suggest deburring, preferably by chemical polishing, electrocleaning or electropolishing.  This will remove any slivers and embedded debris.

RE: Silver colored contamination after handling stainless steel parts

Kevlach is correct. The fact that the debris is silver confirms that it is the stainless. Free iron would turn black or red from oxidation; stainless stays silver colored.

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