ASTM A-70-39

[twils]

I have been looking for allowable stresses for an old vessel made from A-70-39 FB material. I know this is a withdrawn spec, but I can't find any more information than it was superceded.

 

[JoAH]

I found this in an old out of print book; Hoyt, Samuel L., Metal Data, Reinhold Publishing Co., copyright 1952, page 37

ASTM No. YP(psi, min) TS(Mpsi) %Elong-8" C content
A-70 Firebox Gr B 0.5TS 48/58 1550000/TS 0.10~0.15

Hope this helps some.

 

[metengr]

I have a 1952 ASME Boiler Code book that might have the allowable stresses, I will post back later.

 

[metengr]

There are no allowable stresses in the 1952 code book. This material is not even listed.