A182-F92 (K92460) allowable stress values for the pressure boundary
A182-F92 (K92460) allowable stress values for the pressure boundary
(OP)
Hello All,
I'm designing a control valve body for a temperature of 610 deg C and steam service. I wanted to design the valve body and bonnet as per ASME section Viii, division 1. But I could not find the allowable stress values for this material for this material from ASME Section II-D. I am using 2009 version of ASME Section II-D.
However ASME B16.34 covers A182-F92 under group 1.18. That means I can design the valve as per ASME B16.34. But this will increase the required wall thickness and make the valve body very heavy.
Is there any way I can get the allowable stress values of this material? How someone design a pressure vessel out of this material? Can anyone help?
Thank you in advance...
I'm designing a control valve body for a temperature of 610 deg C and steam service. I wanted to design the valve body and bonnet as per ASME section Viii, division 1. But I could not find the allowable stress values for this material for this material from ASME Section II-D. I am using 2009 version of ASME Section II-D.
However ASME B16.34 covers A182-F92 under group 1.18. That means I can design the valve as per ASME B16.34. But this will increase the required wall thickness and make the valve body very heavy.
Is there any way I can get the allowable stress values of this material? How someone design a pressure vessel out of this material? Can anyone help?
Thank you in advance...





RE: A182-F92 (K92460) allowable stress values for the pressure boundary
For the 2015 edt, K92460 is not in the BPV. However, there is a code case under BPV (# 2179-8) which includes rules for use of K92460 under BPV rules. In there youll find allowable stresses, based on the rules applicable in the BPV. Please note that these rules (or better, design margins) may not need to be the same as for your application, as youre (obviously) not design a pressure vessel.
/edit; please note that A182 F92 is not in B16.34, however A335 P92 and A369 FP92 are.
RE: A182-F92 (K92460) allowable stress values for the pressure boundary
What are the limitations of using code case allowable stress values? The code states 'Users are cautioned that not all jurisdictions or owners automatically accept Code Cases'.
Also the mandatory appendix 43 of the section Viii, division 1 states 'Code Cases that have been incorporated into this Section or have been annulled shall not be used'. But this material A182-F92 is not yet incorporated in section viii which means code case is still valid.
This material is in ASME B16.34-2013 version (group 1.18 and page no. 47). May be it will be safer to stick to B16.34 design rules.
RE: A182-F92 (K92460) allowable stress values for the pressure boundary
If a Code case has been annuled, it makes sense (obviously) you cant use it anymore. If it has been incorporated, well, it has been incorporated, so you need to follow the Code itself (e.g. VIII-1) when you want to use acertain material.
As per my last reply, please note A182-F92 is not in B16.34-2013. A369 FP92 is, and A335 P92. Please make sure you are using the correct ASME specification and material grade (more specifically, exact UNS number).
RE: A182-F92 (K92460) allowable stress values for the pressure boundary
Please see attached extracted page of B16.34 where A182-F92 also specified. It also has other materials that you have mentioned.
RE: A182-F92 (K92460) allowable stress values for the pressure boundary