Re: [MW:28114] CRITERIA OF CLAD THICKNESS

Hi,

The clad thickness would be derived from the WPS/PQR, the minium thickness to be welded in WPS (Undiluted chemistry achieved height in PQR + any client required depth for undiluted chemistry) will have to be specified in the drawings. With respect to dilution, you have to consider upto 0.5mm extra in the CS base metal, while ordering. This is required since during de-cladding you will be removing upto 0.5mm of diluted base metal for welding the carbon steel.

On Mon, Jul 23, 2018 at 9:18 AM, Ali Asghari <asgharialigl@gmail.com> wrote:

Dear All.

Does anybody know about how a designer calculate the thickness of clad material especially for sour service and how much is conservative?

because in our project documents have not said clearly that thickness of clad have to be measured from base material or from layer that dilution is negligible and this question remained does designer account or consider dilution or not?

Regards.

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Regards,
Dsilva

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