ASME B31 Allowable Stresses
ASME B31 Allowable Stresses
(OP)
How do I calculate the allowable stress of a particular material that is not listed within ASME B31.3 or ASME IID.
I am particularly interested in ASTM A350 LF6 Cl.2 @ 210F.
Can anyone please help.
I am particularly interested in ASTM A350 LF6 Cl.2 @ 210F.
Can anyone please help.





RE: ASME B31 Allowable Stresses
The mechanical properties of the steel alloy outlined in ASTM A 350 LF6, class 2 will not change appreciably from ambient temperature to 210 degrees F, with much emphasis on appreciably. Which heat treatment were you considering? I would expect the precipition heat treatments to provide the most stable mechanical properties as temperature increases, but again, 210 degrees F is not really considered elevated temperature.
RE: ASME B31 Allowable Stresses
Good Luck!
RE: ASME B31 Allowable Stresses
RE: ASME B31 Allowable Stresses
You may be able to use the bases to justify using the allowable stresses from another material based upon the comparable properties...
I haven't personally done any of this, but it would seem to be a logical approach to the problem.
Hope this helps.
RE: ASME B31 Allowable Stresses
In ASME B31.3(2002)302.3.2 (f)it suggests multiplying the the SMTS by the ratio of the Tensile strength at temperature to the tensile strength at room temperature.
This is confusing as I require the tensile strength of the given material at the particular temperature to find the tensile strength of the given material at the particular temperature?
Unfortunately,still lost?
RE: ASME B31 Allowable Stresses
I'd like to know max pressure the Carbon steel(A352 Gr LCC) and AISI 316 are able to withstand when temperature is below - 60°C for Rating 300 and 600.
Thanks
Teo