Patent ID: 7950330

Claim:
A projectile, comprising: a compacted and sintered mixture of: a) a plurality of tungsten particles that are from about 8 microns to about 30 microns in size; b) a plurality of iron particles that are from about 40 microns to about 200 microns in size; and c) a material additive comprising at least one of the following: a chemical compound, a polymeric compound, a binder, and a lubricant, or any combination thereof; wherein at least a portion of the plurality of iron particles are bonded together; wherein there are no intermetallic compounds or alloys of the tungsten particles and the iron particles formed due, in part, to the size of the tungsten particles and the size of the iron particles utilized; wherein the final density of the projectile is from about 8.0 grams per cubic centimeter to about 12.2. grams per cubic centimeter and the final hardness of the projectile is from about 10 HB to about 50 HB; wherein densification is achieved when the mixture is compacted due to mechanical bond formation between the plurality of tungsten particles and the plurality of iron particles and there is no substantial densification occurring as a result of sintering; and wherein the ratio of the mixture of tungsten particles to iron particles is, by weight, from about 30:70 to about 65:35.