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: That's an excellent point. I hope I didn't make
: this even more confusing by bringing the 400
: grade steels into the conversation.
: From what I can tell, the Rockwell scale isn't
: commonly used on 300 grade steel. I'm
: assuming it's because of its softness. I did
: find one reference that mentioned a 300
: steel as having an RC of 11-13. Would that
: make sense?
Not really. Stainless Steel, even the 300 grade has to be checked by quality control anywhere it is manufactured or used. This is commonly done at the steel company that manufactures and supplies it. Food processing, pharmaceutical companies use it for pumps, piping, machinery driveshaft material etc. This grade of stainless (especially 316) stands up extremely well to acids and corrosion. Think of trying to pump something like pickle brine (vinegar) or mustard (vinegar and salt) through a black iron pipe that rusts!
300 grade SS is usually between 28 and 35 Rockwell and obviously you could not have it too soft, even from the steel company as it would fail, and that would not look good for the manufacturer. It can not however, be heat treated. Dennis
: -jb
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