Burn-resistant and high tensile strength metal alloys

Abstract

Burn-resistant metal alloys that also have a high tensile strength are described. The alloys generally include about 55 to about 75 weight percent nickel, about 12 to about 17 weight percent cobalt, about 4 to about 16 weight percent chromium, about 1 to about 4 weight percent aluminum, and about 1 to about 4 weight percent titanium.

What is claimed is:  
     
         1 . A burn resistance and high tensile strength alloy, comprising: 
 about 55 to about 75 weight percent nickel;    about 12 to about 17 weight percent cobalt;    about 4 to about 16 weight percent chromium;    about 1 to about 4 weight percent aluminum; and    about 1 to about 4 weight percent titanium.    
     
     
         2 . The alloy of  claim 1 , wherein the nickel content is about 70 to about 75 weight percent.  
     
     
         3 . The alloy of  claim 1 , wherein the cobalt content is about 13.5 to about 16.5 weight percent.  
     
     
         4 . The alloy of  claim 1 , wherein the chromium content is about 6 to about 15 weight percent.  
     
     
         5 . The alloy of  claim 1 , wherein the aluminum content is about 1 to about 3 weight percent.  
     
     
         6 . The alloy of  claim 1 , further comprising about 0.15 to about 0.25 weight percent manganese.  
     
     
         7 . The alloy of  claim 1 , further comprising silicone.  
     
     
         8 . The alloy of  claim 1 , further comprising about 0.01 to about 0.5 weight percent carbon.  
     
     
         9 . The alloy of  claim 1 , further comprising about 0.003 to about 0.009 weight percent boron.  
     
     
         10 . The alloy of  claim 1 , further comprising about 0.02 to about 0.07 weight percent zirconium.  
     
     
         11 . A nickel-based alloy, comprising: 
 about 70 to about 75 weight percent nickel;    about 13.5 to about 16.5 weight percent cobalt;    about 6 to about 15 weight percent chromium;    about 1 to about 4 weight percent aluminum; and    about 1 to about 4 weight percent titanium.    
     
     
         12 . The nickel-based alloy of  claim 11 , wherein the aluminum content is about 1 to about 3 weight percent.  
     
     
         13 . The nickel-based alloy of  claim 11 , further comprising about 0.15 to about 0.25 weight percent manganese.  
     
     
         14 . The nickel-based alloy of  claim 11 , further comprising silicone.  
     
     
         15 . The nickel-based alloy of  claim 11 , further comprising about 0.01 to about 0.5 weight percent carbon.  
     
     
         16 . The nickel-based alloy of  claim 1  1, further comprising about 0.003 to about 0.009 weight percent boron.  
     
     
         17 . The nickel-based alloy of  claim 1  1 further comprising about 0.02 to about 0.07 weight percent zirconium.  
     
     
         18 . A nickel-based metal alloy comprising: 
 at least 50 weight percent nickel;    a threshold pressure at least about 4,000 pounds per square inch; and    a tensile strength at least about 160,000 pounds per square inch.    
     
     
         19 . The nickel-based metal alloy of  claim 18 , further comprising cobalt, chromium, and titanium.  
     
     
         20 . The nickel-based metal alloy of  claim 19 , manganese, carbon, boron, zirconium, and silicone.  
     
     
         21 . The nickel-based metal alloy of  claim 18 , wherein said threshold pressure is between about 4,000 and about 12,000 pounds per square inch.  
     
     
         22 . The nickel-based metal alloy of  claim 18 , wherein said tensile strength is between about 160,000 and about 180,000 pounds per square inch.