Old ASTM material designations
Old ASTM material designations
(OP)
Can anyone help me correlate old ASTM material designations which were in use in the early 1940's, such as ASTM A-181, Class 1, A-70, and Firebox steel to current ASTM material designations? Please reply. Thanks, Tom





RE: Old ASTM material designations
http://enterprise.astm.org/discontinued.htm
For steels that were supplied under withdrawn ASTM specifications, in some cases there is no equivalent material substitution. Instead, upgraded materials have taken their place. As steel-making technology progressed over time, ASTM standards were revised or withdrawn.
For the firebox quality steel, I can tell you that the substitute used today is ASME SA 515 Grade 70.