Hello Gents,
I have reproduced the clause UG-4 below;
"UG-4 GENERAL
(a) Material subject to stress due to pressure shall conform to one of the specifications given in Section II, Part D,Subpart 1, Tables 1A, 1B, and 3[/highlight], including all applicable notes in the tables, and shall be...
Hi Mike,
I am referring to ASME Section II MANDATORY APPENDIX 1 "BASIS FOR ESTABLISHING STRESS VALUES IN TABLES 1A AND 1B".
In the appendix, in clause 1-100 "DERIVATION OF ALLOWABLE STRESS VALUES" there is a paragraph "Two sets of allowable stress values are provided in Tables 1A and 1B for...
Hi Mike,
Thanks again! I am using SS 304 material with Ys being above standard suggested in ASME II part D. So I am using the table 1-100 formula where Allowable is required to be the Lower of the two values derived namely 1) Ts/3.5 and 2) Ys/1.5.
However there is a sub-paragraph and a Note...
Hi Mike,
Thanks for your prompt response.
My interpretation from my above references is that in the cases of Austenitic materials it is allowed to choose Allowable strength between 0.66*Ys (Yield strength) and 0.9*Ys in certain applications as suggested even if that exceeds value of Tensile...
[b]In ASME Section II MANDATORY APPENDIX 1 BASIS FOR ESTABLISHING STRESS VALUES IN TABLES 1A, Para 1-100 (a), if the 90% of Yield strength is allowed as Allowable stress in Austenitic Material and if it exceeds St / 3.5 (Ultimate strength / 3.5), is it still allowed? Para 1-100 (a) says:
.
(4)...
