Abstract: A composite tool comprising a supporting part of a metallic material having a first composition and a working part of a metallic material having a second composition which is different from the first composition, a process for the manufacture thereof and a method of cutting an austentic alloy article with this composite tool. The supporting part of the composite tool is made of a tenacious iron-based material, and the working part is made of a precipitation harden iron-cobalt-tungsten alloy. The parts are joined by a metallic connection.

Abstract: The invention relates to a composite tool consisting of a metallic supporting part and at least one such working part of different material compositions, which parts are metallically bonded to each other, in particular, a saw blade or bandsaw. For increasing the cutting yield and tool service life, in particular, when working titanium and titanium alloys, austenitic Cr—Ni—Mn—N steels and nickel and nickel-based alloys, the invention provides that the supporting part or the supporting strip are formed of a tenacious iron-based material and that the working part(s) are formed of a precipitation hardenable iron-cobalt-tungsten alloy (Fe—Co—W).