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309 Weld Metal Impacts Required?

309 Weld Metal Impacts Required?

309 Weld Metal Impacts Required?

(OP)
On a weld procedure test to B31.3 (or VIII-1), are weld metal impacts still required when welding say, ferritic SS using 309? Obviously HAZ testing is still required.

RE: 309 Weld Metal Impacts Required?

(OP)
I should add that the MDMT is fairly high, above the point where impacts are mandatory for austenitic SS weld metal.

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