Patent ID: 8921737
Filing Date: 2014-12-30
Classification: B23K,C22C

Abstract:
1. A welding electrode used for high strength welding, wherein the electrode comprises: a wire core component and an electrode coating component about the wire core component, the wire core and electrode coating components including 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; the amount of manganese being in the range of 1.5 to 2.0% by weight; Mg in the range of 0 to 0.2% by weight; Si in the range of 1.9 to 3.0% by weight; Zr in the range of 0.4 to 1.1% by weight Al 0.1% by weight; Ti in the range of 0.9 to 1.5% by weight; Ca in the range of 5.4 to 8.0% by weight; F in the range of 2.5 to 3.5% by weight; K in the range of 0.2 to 0.4% by weight; Li in the range of 0.01 to 0.05% by weight; and Na in the range of 0.1 to 0.3% by weight, the remaining composition in percent by weight including Fe; with no chromium intentionally added such that any tramp amount of chromium in the electrode provides for an undiluted weld deposit having no more than 0.20% by weight of chromium.