ASTM A564 - XM Designation?
ASTM A564 - XM Designation?
(OP)
I am looking at the ASTM Standard A%^$.
I see that there are different types associated with the UNS Designations. Why does it go from a 600 series to an XM series...does the XM have a specific meaning?
Any good references to get more details on the way stainless is designated?
Thanks in advance
I see that there are different types associated with the UNS Designations. Why does it go from a 600 series to an XM series...does the XM have a specific meaning?
Any good references to get more details on the way stainless is designated?
Thanks in advance





RE: ASTM A564 - XM Designation?
RE: ASTM A564 - XM Designation?
http://www.astm.org/cgi-bin/SoftCart.exe/SNEWS/MAY_2002...
Development of the Unified Numbering System
Quote:
"Discontinued numbers—The AISI decided to discontinue the practice of designating numbers for steels, and this was a particular problem with regard to the assignment of designations to new stainless steels. ASTM was attempting to fill the gap by issuing a new series of numbers for proprietary stainless steels (e.g., XM-1, XM-2, XM-3, etc.)"
From that I gather that it is arbitrary, with the X or the M not standing for anything in particular.
RE: ASTM A564 - XM Designation?