Re: [MW:20085] Black spots on DSS Weld Joints.

It looks like slag inclusion.

On 12 February 2014 15:08, Vasantharao <vasantharao@yahoo.in> wrote:

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

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Thanks & Regards,

A Bharat Kumar

+91 9989717650

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