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Recommended Stainless Steel Welding Procedures for Corps of Engineers Construction

机译：工程兵团建设的推荐不锈钢焊接程序

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Two stainless steel welding methods are investigated for potential use in Corps of Engineers construction. The methods-gas tungsten-arc welding (GTAW) and shielded metal-arc welding (SMAW)-are tested with varying current levels for two stainless steels (types 304 and 316). Comparative analyses are made between test results and standard specifications for the weld's mechanical properties. Test samples also are examined using metallography and electron microscopy. Results show that GTAW and SMAW provide sound welds in the two stainless steels tested. Moreover, using low-carbon electrodes and filler metal and low currents in the welding process results in low precipitate levels in the heat-affected zone, thus reducing the risk of knifeline corrosion attack. The objective of this work is to investigate current limitations and welding positions that will refine stainless stell pipe welding for field construction and to use this information as a basis for recommending guidance for CE stainless steel welding procedures.

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