Some of the austenitic-ferritic grades do not contain a hardness limit in the Rockwell B column of Table 2. Footnote C to Table 2 limits hardness readings to Brinell or Rockwell B. Rockwell B is not a suitable measurement method for most austenitic-ferritic grades. Many of the austenitic-ferritic grades have a Rockwell C maximum with footnote J. I propose to add Rockwell C maximums to the austenitic-ferritic grades that do not currently have one so that Rockwell C readings will be acceptable.
Keywordschromium; chromium-nickel stainless steel; chromiummanganese-nickel stainless steel; pressure vessels;
Ballot Item Approved as A240/A240M-2014 and Pending Publication