A conductive and flexible carbon fiber according to the present disclosure includes a carbon fiber; a resin layer formed on the carbon fiber; and a metal plating layer formed on the resin layer. The resin layer of the carbon and flexible carbon fiber according to the present disclosure is uniformly coated on the carbon fiber, such that a breakage of the carbon fiber during the conductive carbon fiber production process may be prevented. In addition, the metal plating layer having the uniform thickness is plated on the resin layer having the uniform thickness, such that the electric conductivity of the carbon fiber may be improved and the flexibility of the carbon fiber may also be increased. In addition, a production process of the carbon and flexible carbon fiber according to the present disclosure is simplified, such that the production cost and time may be saved.

A yarn or multi-fiber formed of a plurality of micron diameter stainless steel monofilaments which have been rendered more conductive by one or more coatings of electrolytically-deposited metal or metal alloy materials. The metallized yarn provided by the invention has a very low electrical resistance, with consequent benefit in electrical performance, and is particularly useful as an RFI/EMI shielding material.

The contents of Cr, Fe, Mn, Ti, Si, Cu, N, Al, C, Mg, Mo, B, Zr, and Nb+Ta in a Ni-base alloy weld metal are properly specified and the contents of Co, P, and S in incidental impurities are controlled. In particular, a weld metal having high cracking resistance is formed by specifying the Mn content in a proper range and restricting the contents of B and Zr at low levels. Regarding a Ni-base alloy covered electrode, by specifying the contents of a slag-forming agent, a metal fluoride, and a carbonate serving as flux components in proper ranges and controlling the contents of Mn, Nb+Ta, and Fe in a flux, good welding workability is achieved and a weld metal having good bead appearance is formed.

A flux for use in soldering comprises a first constituent and one or more secondary constituents that is selected from solvents, thickeners, and/or metal oxide reducing agents. The flux has a temperature profile in which the flux is in a non-flowable inactive state at temperatures at and below a maximum storage temperature that is above about 27 C., a liquid active state at an activation temperature, and a flowable inactive state in a deposition temperature range above the maximum storage temperature and below the activation temperature. A solder material comprises solder particles dispersed in the flux.

A flux coating composition may include a composition paste including an elastomer solution mixed with a flux powder or a flux paste. When the composition is heated during a brazing operation, the composition yields no metal oxides and 50 ppm of carbon, ash, fumes, smoke, or other by-product contaminants. The flux may include a binder with an acrylic resin and a plurality of synthetic rubber compounds.