Dear All, I confused in PWHT of Quench and Tempered steels. What does mean "The maximum cooling rate established in UCS-56(e) (5) need not apply" according to ASME Sec. VIII, Div.1, UHT-56(C)? "Need not" or "Shall not" or "is better"? Is there any problem, if I following the maximum cooling rate according to UCS-56(e) (5)? Your reply would be highly appreciated in advance. |
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