US 6,981,996 B2
Tungsten-tin composite material for green ammunition
Kenneth H. Shaner, Towanda, Pa. (US); and Michael R. Pierce, Towanda, Pa. (US)
Assigned to Osram Sylvania Inc., Danvers, Mass. (US)
Filed on Mar. 14, 2003, as Appl. No. 10/389,321.
Prior Publication US 2004/0177720 A1, Sep. 16, 2004
Int. Cl. B22F 3/00 (2006.01)
U.S. Cl. 75—248 21 Claims
 
1. A tungsten-tin composite material for lead-free ammunition comprising spheroidized tungsten particles imbedded in a tin matrix, the composite material having a measured density which is at least 99% of the theoretical density of the composite.