Composite material containing tungsten and bronze

Abstract

High-density composite materials comprising tungsten and bronze are useful as lead replacements in the production of ammunition, weights and other high density articles. The composition of the composite, articles manufactured using the composite, and a process for making the composite are disclosed.

1 - 37 . (canceled)  
   
   
       38 . A projectile comprising 
 a composite consisting essentially of a suspension of tungsten and pre-alloyed copper/tin bronze.    
   
   
       39 . A projectile according to  claim 38 , which is a bullet.  
   
   
       40 . A projectile according to  claim 38 , which is a bullet core.  
   
   
       41 . A projectile according to  claim 38 , which is shot.  
   
   
       42 . A projectile according to  claim 38 , wherein 40-85% by weight of said composite is tungsten.  
   
   
       43 . A projectile according to  claim 42 , wherein 50-55% by weight of said composite is tungsten.  
   
   
       44 . A projectile according to  claim 43 , wherein 52% by weight of said composite is tungsten.  
   
   
       45 . A projectile according to  claim 38 , wherein 80-95% by weight of said bronze is copper.  
   
   
       46 . A projectile according to  claim 42 , wherein 80-95% by weight of said bronze is copper.  
   
   
       47 . A projectile according to  claim 38 , wherein said bronze has a copper:tin ratio of about 9:1.  
   
   
       48 . A projectile according to  claim 38 , further comprising a surfactant or a wetting agent.  
   
   
       49 . A projectile according to  claim 38 , wherein said composite consists of tungsten, copper/tin bronze and iron.  
   
   
       50 . A projectile according to  claim 49 , wherein 0.5-5% by weight of said composite is iron.  
   
   
       51 . A projectile according to  claim 50 , wherein about 0.8% by weight of said composite is iron.  
   
   
       52 . A projectile according to  claim 49 , wherein 40-85% by weight of said composite is tungsten.  
   
   
       53 . A projectile according to  claim 52 , wherein 50-55% by weight of said composite is tungsten.  
   
   
       54 . A projectile according to  claim 53 , wherein 52% by weight of said composite is tungsten.  
   
   
       55 . A projectile according to  claim 49 , wherein 80-95% by weight of said bronze is copper.  
   
   
       56 . A projectile according to  claim 52 , wherein 80-95% by weight of said bronze is copper.  
   
   
       57 . A projectile according to  claim 49 , wherein said bronze has a copper:tin ratio of about 9:1.