Patent ID: 8269144

Claim:
A welding electrode used for high strength welding, wherein the electrode comprises: at least manganese, molybdenum, nickel, and carbon, the amount of carbon being in the range of 0.8 to 1.5% by weight; the amount of nickel being in the range of 1.2 to 2.0% by weight; the amount of molybdenum being in the range of 0.01 to 0.5% by weight; and the amount of manganese being in the range of 1.5 to 2.0% by weight, wherein the ratio of manganese to molybdenum in the electrode is maintained in the range of 4-8 to 1; with no addition of chromium such that any tramp amount of chromium in the electrode provides an undiluted weld deposit having no more than 0.20% by weight of chromium with a balance of alloys in the weld deposit having an amount of carbon in the range of 0.04 to 0.06% by weight and a weld deposit manganese to molybdenum ratio of 2-7 to 1 so as to define a carbon equivalent of the weld deposit ranging from 0.15-0.35 and having an ultimate tensile strength of at least 110 ksi and a 0.2% yield strength in the range of 85 to 125 ksi, when welded with a heat input in the range of about 30 KJ/in to about 60 KJ/in; and the welding electrode has a diameter of at least 3/32 inch.