U bend tube stress relieve
U bend tube stress relieve
(OP)
Dear all,
Could you please give me an advice. I have u tube of A 213 T11 (1.25 Cr - 0.5 Mo). Do I need stress relieve for these tubes ? Is there any code regarding this matter ?
Thanks a lot.
Could you please give me an advice. I have u tube of A 213 T11 (1.25 Cr - 0.5 Mo). Do I need stress relieve for these tubes ? Is there any code regarding this matter ?
Thanks a lot.





RE: U bend tube stress relieve
RE: U bend tube stress relieve
rmw
RE: U bend tube stress relieve
I believe there is no requirement for stress relief of U bends furnished under SA 213 T11 material specification used in Section I or Section VIII applications. SA 688 applies only to austenitic stainless steel tubes for feedwater heaters.
RE: U bend tube stress relieve
You are the person I wanted to hear that from. Steel alloy tubing is just beginning to be used again in T11 and T22 grades, and I was unsure if like SA-688 TPXXX there was such a requriement for the steel tubing. My inside expert is in the process of relocating offices, and unavailable to me for a few days. Thanks for pinch hitting. I value your contributions to this forum.
rmw