Fiber Elongation and PWHT
Fiber Elongation and PWHT
(OP)
This will probably be an easy one for most of you here, but I'm stuck so here goes:
I've got a Carbon Steel Vessel 5/8" thk. shell and 1/2" thk. 2:1 heads that are Cold Formed.
I'm getting a "fiber elongation exceeds 5%" warning and I'm wondering if I must heat treat the ENTIRE vessel?
If I must heat treat, can't I just heat the heads? If I would've gotten the heads "HOT Formed" I wouldn't be worried about this,
so what is the difference if I just do a quick heat treat of the heads?
Thanks in Advance
JW
I've got a Carbon Steel Vessel 5/8" thk. shell and 1/2" thk. 2:1 heads that are Cold Formed.
I'm getting a "fiber elongation exceeds 5%" warning and I'm wondering if I must heat treat the ENTIRE vessel?
If I must heat treat, can't I just heat the heads? If I would've gotten the heads "HOT Formed" I wouldn't be worried about this,
so what is the difference if I just do a quick heat treat of the heads?
Thanks in Advance
JW





RE: Fiber Elongation and PWHT
If at the end you find that you shall heat treat the heads then they shall be heat treated following the rules of UCS-56. Read also interpretations VIII-1-83-105 and VIII-1-95-50.
Hope this helps.
RE: Fiber Elongation and PWHT