Are there any spot test kits that will help me distinguish between 316 304 and 317 stainless steel or...???

Question

... or between any grade of stainless steel for that matter...???

Answer 1

there is one field kit for your use. It can find out composition of all the metals, alloys etc. its name is XRF analyser.

It costs much. you can get more details at

www.Innov-Xsys.com

Answer 2

http://www.bssa.org.uk/topics.php?articl...

http://web.fccj.org/~smilczan/Two5/tony/...

http://www.niton.com/Metal-and-Alloy-Ana...