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Re: [MW:33334] CS material, E70S2- Welder qualified , can he weld SS 316 material & Duplex, Super duplex material with E70s2 qualification ? or he should be qualified by separate SS 316 & Duplex ,SDSS material ?

By Materials & Welding
Dear Mr. Madheswarn

Since you haven't mentioned the Code Reference, I'm considering ASME SEC IX which is widely used in the industry. As per ASME SEC IX, if the welder is qualified to weld the filler ER70S2, which falls under F-Number F6, he can weld all the filler which falls under F-Number F6, as per QW-433. Since ER316 and other filler wires of SS fall under F-Number F6, the welder can weld these SS Filler wires. Note that other essential variables shall also be noted like Backing, Purging which depends upon the Welding process.

Also please note which Code is referred and based on that this qualification also changes.

Regards
SHAM SHAHABUDDIN
QC INSPECTOR - WELDING


On Fri, Jul 29, 2022 at 9:13 AM Madheswaran s <madhes.sss@gmail.com> wrote:
Dear Experts,

CS material, E70S2- Welder qualified , can he weld SS 316 material & Duplex, Super duplex material with already  he has E70s2 qualification ? or he should be qualified by separately for SS 316 & Duplex ,SDSS material ?



Thanks,
Madheswarn.S

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