Is there a color difference between 303 ss and 316l ss?

Is there a color difference between 303 ss and 316l ss? Can 303 be threaded with a tap? I have had trouble treading stainless before
316 SS is bad news. I have been using 303 for many years fir guards, etc. No problem drilling. I use 308L welding rod for pins, and they disappear in the 303.
I also frequently tap and thread with no problem..Hope that helps.
 
316 SS is bad news. I have been using 303 for many years fir guards, etc. No problem drilling. I use 308L welding rod for pins, and they disappear in the 303.
I also frequently tap and thread with no problem..Hope that helps.
Thank you! Guess I will stay away from 316;)
 
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