Patent ID: 6823798
Filing Date: 2004-11-30
Classification: B22F,C22C,F42B

Abstract:
A tungsten-containing fire projectile, comprising:a lead-free body at least substantially comprised of a compacted powder comprising at least a tungsten-containing component and a tin-containing component, wherein the body has a density in the range of 8 g/cc and 15 g/cc, and further wherein the compacted powder has an extrusion constant (k) of less than 30,000 pounds per square inch (psi), with the extrusion constant being defined by the equation P=k In (A/Aâ€²), with (P) representing the extrusion pressure in psi, (A) representing the cross-sectional area of a sample formed from the compacted powder before extrusion and (Aâ€²) representing the cross-sectional area of the sample after extrusion.