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Important Factors in Pipe Butt Welding of Super Duplex Stainless Steel (SDSS) UNS S32760 Using the GTAW Welding Process

Product Number: MPWT19-14287

Author: Dr. Glenn Byrne

Publication Date: 2019

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The paper considers best practice to realise the optimum combination of strength, toughness,
corrosion resistance and radiographic integrity in UNS S32760 pipe girth welds made using the
GTAW process.
Aspects of fit up, tacking, root gap are considered. The effect of weld heat input and heat input
control through the thickness of the joint, welding technique, inter pass temperature control and
the use of different combinations of shielding and backing gasses on corrosion resistance of
joints is presented. Current specification, procedure and welder qualification requirements are
discussed, as is the need for supplementary testing, in particular quantitative microstructural
evaluation.

Products tagged with 'shielding gas'

Important Factors in Pipe Butt Welding of Super Duplex Stainless Steel (SDSS) UNS S32760 Using the GTAW Welding Process

Association for Materials Protection and Performance