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DMW P11 + 310H

DMW P11 + 310H

DMW P11 + 310H

(OP)
Hi all

What is the best procedure for welding P11 to a 310H with mandatory PWHT for the P11 (700 ºC)?

diameter 8"
Thickness 28 mm
high temperature aplication (550ºC) so we are using inconel 82 has a filler metal

Can the 310H manage without alterations the 2hour PWHT without lossing corrosion resistence propertices or is prefered buttering the P11 first give the PWHT and after this weld the 310H?

Thanks

RE: DMW P11 + 310H

The buttering technique would be preferred.

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