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A mechanical property evaluation of welded joints produced through the electric arc process with coated electrodes E6013 in CSN COR-420 steel was carried out. The proposed study is justified by the weakening of welded joints by the indiscriminate use of rutile electrodes, such as E6013, in field welds (without technical criteria) in high strength and low alloy steels. The objective was to measure the mechanical strength under uniaxial traction as well as the hardness of some regions of these joints through the Rockwell C hardness test. The results indicate that the stress relief treatment brought improvements in tensile strength and uniformity of the hardness profile, but no gains were observed in the ductility in the treated joints.

AVALIAÇÃO DA RESISTÊNCIA A TRAÇÃO E DUREZA DE JUNTAS DE AÇO CSN COR-420 SOLDADAS COM ELETRODO E6013 APÓS TRATAMENTO TÉRMICO DE ALÍVIO DE TENSÕES