Accession Number : AD0493123

Title :   WELDABILITY TESTS OF HIGH TENSILE STEEL (ELIMINATION OF CRACKING TENDENCY IN WELDING NAVY HIGH TENSILE STEEL) BUSHIPS WELDING TEST NO. 325.

Descriptive Note : Partial rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Jackson, Clarence E.

Report Date : 15 APR 1944

Pagination or Media Count : 23

Abstract : The present tests were carried out in order to evaluate the possibility of eliminating the under-bead 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 has been found on high tensile steels of the manganese-titanium treated, the manganese-titanium bearing or the manganese-vanadium type with a lime type heavy coated electrode producing a weld metal with low carbon (0.05 to 0.07 per cent) medium manganese (0.40 to 0.86 per cent) and molybdenum (0.30 to 0.63 per cent). (Author)

Descriptors :   *CRACKS), (*WELDING, STEEL), (*STEEL, TENSILE PROPERTIES, ELECTRODES, CONTROL, TEMPERATURE, TRANSFORMATIONS, AUSTENITE, COATINGS, MANGANESE, MOLYBDENUM, TITANIUM, VANADIUM.

Subject Categories : Metallurgy and Metallography
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE