Liquid Metal Embrittlement of Austenitic Stainless Steel Fitting Caused by Copper Contamination
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A failure was observed in an 18″ long radius elbow of ASTM A403 WP 304-WX grade, during site fabrication and erection activities. All the welded fittings used were manufactured from SS 304 plates by the Monaka process [ 1], which involves cold forming of plates and subsequent welding of the formed halves. The fabrication sequence followed by the fitting manufacturer is shown in Fig. 1.
KeywordsWelding Liquid Metal Austenitic Stainless Steel Copper Alloy Weld Seam
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