Allowable Stress Values for ASME Section II Part D
Allowable Stress Values for ASME Section II Part D
(OP)
Hi Everyone,
This is probably a relatively simple question, but its one I do not know the answer to.
I am looking at performing design calculation using SA-395 which is a nodular cast iron and does have a section in section II part a. I cannot however track down allowable stress values to use from section II part D.
What do you use for allowable stress values in this case?
Thanks,
Rob
This is probably a relatively simple question, but its one I do not know the answer to.
I am looking at performing design calculation using SA-395 which is a nodular cast iron and does have a section in section II part a. I cannot however track down allowable stress values to use from section II part D.
What do you use for allowable stress values in this case?
Thanks,
Rob





RE: Allowable Stress Values for ASME Section II Part D
There are provisions, at least under Sec VIII, Div. 1, to use non-listed materials, but it is usually more practical to find a permitted material of a similar composition and product form.
And yes, Sec II, Part A contains specifications for numerous materials not permitted for boiler and PV work.
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: Allowable Stress Values for ASME Section II Part D
Thanks for the quick response. Oddly enough, the vessel I am looking to verify a calculation for, actually exists already and is 10 years old. Its a 40" OD, 1.4" wall thickness vessel constructed of SA-395 according to the data report. It was built in 2013.
In absence of established values, I will default to the explanation in section II part D in mandatory appendix 1 and use the Tensile strength over 3.5 factor for determining the appropriate stress value.
Sorry for the lack of clarity.
Rob
RE: Allowable Stress Values for ASME Section II Part D
I don't get into part UCD very often, so don't know any other requirements... Take a good read through this section.
RE: Allowable Stress Values for ASME Section II Part D
Thanks for the tip. I found what I was looking for. I dont spend alot of time in that section of Section VIII and it didnt even occur to me to look there.
Thanks for the help,
Rob
RE: Allowable Stress Values for ASME Section II Part D
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand