[MW:20076] Black spots on DSS Weld Joints.

Dear Experts,

We observe Dark spots on Welding of Duplex Stainless Welds.

Material is : UNS S31803 , Filler Wire for root - ER2594, rest ER2209.

Sample pictures are attached for reference.

Oxygen level in shielding / Purging maintained well below 0.2%.

Interpass <150 Deg.C

Pl. share your valuable information.

Thank you.

P.Rao

Comments

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