Using A2 hardware with a A182 GR316L Flange with ASME B31.3
Using A2 hardware with a A182 GR316L Flange with ASME B31.3
(OP)
Hi everyone.
I'd just like a sanity check if you don't mind.....
I'd specified standard ASME hardware for a 316L flange (A193 Gr B8 class 2 bolts and A194 Gr 8A nuts).
Our purchasing team has asked the question regarding using A2 hardware.
My immediate response was no, for 2 reasons......
As per ASME B16.5, A2 hardware isn't listed as an applicable bolting material in table 1B. You could perform the calculations to prove its mechanical strength as per section 309 in B31.3, but, even if it passes, when using a 316L flange, the hardware should be A4 shouldn't it?
I don't know whether I should stick by my original statement and insist on A193 Gr B8 class 2 bolts and A194 Gr 8A nuts (which makes my life easier but maybe not theirs), or run the tests on A4 hardware......
Any thoughts, experiences or options would be welcomed.
Thank you in advance.
Craig
I'd just like a sanity check if you don't mind.....
I'd specified standard ASME hardware for a 316L flange (A193 Gr B8 class 2 bolts and A194 Gr 8A nuts).
Our purchasing team has asked the question regarding using A2 hardware.
My immediate response was no, for 2 reasons......
As per ASME B16.5, A2 hardware isn't listed as an applicable bolting material in table 1B. You could perform the calculations to prove its mechanical strength as per section 309 in B31.3, but, even if it passes, when using a 316L flange, the hardware should be A4 shouldn't it?
I don't know whether I should stick by my original statement and insist on A193 Gr B8 class 2 bolts and A194 Gr 8A nuts (which makes my life easier but maybe not theirs), or run the tests on A4 hardware......
Any thoughts, experiences or options would be welcomed.
Thank you in advance.
Craig





RE: Using A2 hardware with a A182 GR316L Flange with ASME B31.3
What is A2/A4 hardware?
Curtis
RE: Using A2 hardware with a A182 GR316L Flange with ASME B31.3
Thanks
Craig
RE: Using A2 hardware with a A182 GR316L Flange with ASME B31.3
RE: Using A2 hardware with a A182 GR316L Flange with ASME B31.3
However, if your piping doesnt need to match any ocde (e.g. sound engineering practice under the PED), depending on the application you may consider using it, as theyre probably a lot cheaper than those stainless bars with expensive threads.