ISO 3677:2016 specifies designations for filler materials for soldering and brazing, on the basis of their chemical composition. For brazing materials only, the designation includes their solidus/liquidus temperatures. This International Standard deals with the metallic part of filler materials used in soldering and brazing products, e.g. foils, wires, rods, pastes, flux coated rods/wires, flux cored rods/wires, etc.