N for normalizing?

[270BBR]

On ASME SA-516-70N steel does the "N" stand for normalizing?
Thanks

 

[NickelMet]

It has been my experience in the past, from reviewed Material Certs, that it does. However, if possible, if it cannot be clarified on the cert, then contacting the supplier/manufacturer should help you to ensure that designation.

Also, I did a quick scan of ASME SA-20 which is the standard specification for General Requirements fo Steel Plates for Pressure Vessels. (It is referenced in ASME SA-516.) I didn't see the 'N' designation. (Again ... QUICK SCAN.) You may want to review that document also.

~NiM

 

[stanweld]

The appropriate designator to be marked on the plate is "MT" per SA-20 for heat treatment, which is defined by SA-516 as normalizing when heat treatment is performed. The N designation was commonly used by manufacturers on their MTR's and engineers in their specifications to designate that the plate had been normalized or required a normalizing heat treatment, respectively.