Abstract: Improved frangible bullets comprising powder particles of one metal bonded together by another metal wherein the metals have substantially different melting points or an alloying metal is diffused between the metal particles are manufactured by compacting the metal particles and heating under conditions to create brittle bonds.

Abstract: The invention provides a fully dense compacted metal composite comprising silver alloy matrix having uniformly dispersed therein discrete microparticles of a refractory metal oxide, and further comprising discrete macroparticles of metal oxides. This composition can be used for electrical contacts which have greater mechanical strength, welding resistance and arc erosion resistance than previously known electrical contacts.

Abstract: The invention relates to bullets having increased frangibility (or which can be easily fragmented) and to materials and processes for the manufacture of such bullets. The bullets of the present invention are typically made from copper or copper alloy powders (including brass, bronze and dispersion strengthened copper) which are pressed and then sintered under conditions so as to obtain bullets with the desired level of frangibility. In preferred embodiments of the invention, the bullets also contain several additives that increase or decrease their frangibility.