Thanks to everyone who responded to this question. I haven't arrived at a concrete answer other than to assume it's an internal company designation. Precision Metal Services has a 316R as a subset of 316 alloys. Anyhow, I have released the lockring due to it's application and the fact that it...
Thanks, TVP and maui
I'm still awaiting the supplier to call with hopefully an answer. Glad to see I wasn't the only one confused. Thanks for checking the MPIF #35, since I didn't have access to that spec you've answered an important question. It's seeming like, as was suggested by TVP, this...
Carburize,
thanks for the leads. I found the food grade reference too? I also found a Precision Metals Service that has an internal spec PMS 316R. I'm now trying to find out where my supplier got their raw material. The excitement never ends? Thanks again for your input!
Wilson
Thanks unclesyd for the quick response. I've had about as much luck too.
The entire material designation is:
SS-316-R Austenitic Stainless Steel per MPIF STD NO.35.
I do not have access to MPIF STD 35 but it is supposed to be equivalent to ASTM B883 which does not list 316R? I have a call...
I am trying to figure out what the "R" designation is for a fastener stating it's 316R. I would appreciate any help to shed some light on this? I've looked on the web and several books and cannot find the exact "R" processing and chemistry requirements.
Thanks in advance...