Weldability Tests of High Tensile Steel (Elimination of Cracking Tendency in Welding Navy High Tensile Steel) BUSHIPS Welding Test No. 325. Partial report

摘要

Tests were carried out in order to evaluate the possibility of eliminating the underbead cracking tendency in welding high tensile steels by use of an electrode with a transformation synchronized with that of the base metal in the heat affected zone. Sixteen brands of commercial and experimental electrodes in various diameters were used in the cracking test. The cracking tendency observed in the heat affected zone of high tensile steels can be reduced by the use of low-alloy electrodes with a lower-transformation temperature. No cracking was observed in high tensile steels of the manganese-titanium treated, the manganese-titanium bearing or the manganese-vanadium type.