A metal-cored electrode for welding to form a weld bead on a ferrous material, which weld bead includes at least 35 wt. % nickel. The metal-cored electrode includes a metal sheath surrounding a core. The core includes greater than 35 wt. % nickel.

A solid wire according to an aspect of the present invention contains, as a chemical composition: C: 0.003% to 0.080%; Si: 0.0010% to 0.50%; Mn: 0.050% to 1.80%; Al: 0.030% to 0.500%; Ni: 8.0% to 16.0%; P: 0.0200% or less; S: 0.0100% or less; O: 0.050% or less; Ta: 0% to 0.1000%; Cu: 0% to 0.5%; Cr: 0% to 0.5%; Mo: 0% to 0.5%; V: 0% to 0.20%; Ti: 0% to 0.10%; Nb: 0% to 0.10%; B: 0% to 0.010%; Mg: 0% to 0.80%; REM: 0% to 0.050%; and a remainder: Fe and impurities, a is 1.35% to 5.50%, and Ceq is 0.250% to 0.520%.

Systems and methods for low-manganese welding alloys are disclosed. An example arc welding consumable may comprise: between 0.4 and 1.0 wt% manganese; strengthening agents selected from the group consisting of nickel, cobalt, copper, carbon, molybdenum, chromium, vanadium, silicon, and boron; and grain control agents selected from the group consisting of niobium, tantalum, titanium, zirconium, and boron. The grain control agents may comprise greater than 0.06 wt% and less than 0.6 wt% of the welding consumable. The resulting weld deposit may comprise a tensile strength greater than or equal to 70 ksi, a yield strength greater than or equal to 58 ksi, a ductility (as measured by percent elongation) of at least 22%, and a Charpy V-notch toughness greater than or equal to 20 ft-lbs at -20° F. The welding consumable may provide a manganese fume generation rate less than 0.01 grams per minute during the arc welding operation.

The present disclosure belongs to the technical field of welding materials, and in particular relates to a Fe—Ni based alloy welding wire for welding 800H alloy and a preparation method thereof and a method for welding 800H alloy. The Fe—Ni based alloy welding wire for welding 800H alloy provided by the present disclosure has a reasonable chemical components, and after being used to weld 800H alloy, the obtained weld has a tensile strength of 557.6 MPa and an elongation of 37.5% at ambient temperature, and has a tensile strength of 420 MPa and an elongation of 17.25% at a temperature of 650° C.

The present disclosure belongs to the technical field of welding materials, and in particular relates to a Fe—Ni based alloy welding wire for welding 800H alloy and a preparation method thereof and a method for welding 800H alloy. The Fe—Ni based alloy welding wire for welding 800H alloy provided by the present disclosure has a reasonable chemical components, and after being used to weld 800H alloy, the obtained weld has a tensile strength of 557.6 MPa and an elongation of 37.5% at ambient temperature, and has a tensile strength of 420 MPa and an elongation of 17.25% at a temperature of 650° C.

A Ni-based alloy flux-cored wire includes the contents of Mn and Nb that are adjusted so that, from the wire, it is possible to obtain a weld metal having an excellent bead shape, good arc stability, spattering inhibition effect, good strength, good defect resistance, and good crack resistance. The Ni-based alloy flux-cored wire produces a weld metal having an excellent bead shape in multiple position welding of Ni-based alloy, 9% Ni steel, and high corrosion-resistance austenitic stainless steel, and an effect of producing a weld metal having good strength, defect resistance, and crack resistance.

The disclosed technology generally relates welding electrodes, and more particularly to covered consumable welding electrodes. In an aspect, a consumable welding electrode comprises a core wire comprising a steel composition and a coating formed on the core wire. The coating comprises weld metal alloying elements comprising Fe, C, Mn, Si, Ni, Mo, V and Cr that are arranged such that an undiluted weld metal formed from the covered welding electrode has a combination of high tensile strength and high impact strength.

A welding or additive manufacturing wire drive system includes a first drive roll and a second drive roll. One or both of the drive rolls has a circumferential groove for simultaneously driving both of a first wire electrode and a second wire electrode located between the drive rolls in the circumferential groove. A sensor device generates a signal or data corresponding to a consumed or remaining amount of one or both of the wire electrodes. The first wire electrode contacts the second wire electrode within the circumferential groove. The first wire electrode further contacts a first sidewall portion of the circumferential groove. The second wire electrode further contacts a second sidewall portion of the circumferential groove. Both of the wire electrodes are offset from a base portion of the circumferential groove, said base portion extending between the first sidewall portion and the second sidewall portion of the circumferential groove.

There is provided an austenitic heat resistant alloy including a chemical composition that contains, in mass percent: C: 0.04 to 0.18%, Si: 1.5% or less; Mn: 2.0% or less, P: 0.020% or less, S: 0.030% or less, Cu: 0.10% or less, Ni: 20.0 to 30.0%, Cr: 21.0 to 24.0%, Mo: 1.0 to 2.0%, Nb: 0.10 to 0.40%, Ti: 0.20% or less, Al: 0.05% or less, N: 0.10 to 0.35%, and B: 0.0015 to 0.005%, with the balance: Fe and impurities, the austenitic heat resistant alloy satisfying [P+6B≤0.040].

The invention relates to a weld metal deposit having the following chemical composition: C: 0.08-0.10 wt % Mn: 1.30-2.00 wt % Si: 0.35-0.60 wt % Cr: 0.60-0.80 wt % Ni: 2.50-3.00 wt % Mo: 0.30-0.80 wt % V: 0.20-0.30 wt %
and optionally further components, in particular: Co: ≤0.02 wt % Ti: 0.01-0.02 wt % Al: ≤0.010 wt %,
Balance: iron as well as unavoidable impurities.