SB-148 C95800 allowable stress
SB-148 C95800 allowable stress
(OP)
In ASME sec. II there is no allowable stress shown for Sb-148 C95800. How can I find the allowable stress for the material specification SB-148 C95800 ?
Thanks for your help
Thanks for your help
G





RE: SB-148 C95800 allowable stress
This alloy is not permitted for use as a pressure retaining item for ASME B&PV code applications.
As far as allowable stress, you are on your own and at your own risk. You have several different options;
1. Use UTS/4 or 2/3 * YS, and whichever is lower this could be used for allowable stress PROVIDED you are below 400 deg F in service temperature.
2. UTS/3.5 or 2/3 * YS
Proceed with caution because sand castings generally have inherent flaws, in comparison to wrought material.
RE: SB-148 C95800 allowable stress
G
RE: SB-148 C95800 allowable stress
Perhaps I can state it better this way, only materials that are listed in Table 1A and Table 1B in Section II, Part D, Subpart 1 may be used for pressure retaining capacity.
Now, back to your original post - materials that are not listed in Section II but have been approved for use by ASME like ASME SB 148 C95800 can be used in non-pressure retaining applications.