Re: [MW:21508] CAN WE PERFORM PWHT AFTER SS 304 CLADING/OVERLAY ON ALOY STEEL

304 clad not suitable for F5. It has to be 321 or 347 clad. vanchi

Sent from Windows Mail

From: HEMANT SUTHAR
Sent: ‎Thursday‎, ‎31‎ ‎July‎ ‎2014 ‎16‎:‎46
To: materials-welding@googlegroups.com

Dear Sir,

I have to do PWHT after explosive bonding and some portion overlay welding in heat exchanger. We have to do overlay and weld cladding of SS 304 on SA 336 Gr. F5. PWHT heating cycle is 720 C at 2 hours.

 Material : SA 336 Gr F5 + SS 304 CLAD

now my doubt is if we will do PWHT in sensitization range so that there is chance of IGC in SS material and SS clading will not fulfill its corrosin resistance purpose.

so kindly pls suggest we can do or not do???

Thanks,

Hemant Suthar

7600096712

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