| 
         Ingredient Name  | 
      
         CAS Number  | 
      
         % Weight  | 
    
| Tungsten | 7440-33-7 | 50-90 | 
| Copper | 7440-50-8 | 10-50 | 
| 
         Composition  | 
      
         W 90%  | 
      
         W 88%  | 
      
         W 85%  | 
      
         W 80%  | 
    
| Density (g/cm3)  | 
      17.0 | 16.6 | 16.4 | 15.5 | 
| Coefficient of Thermal Expansion(10-6/K)  | 
      5.6 | 5.7 | 5.8 | 7.0 | 
| Thermal Conductivity (W/mK)  | 
      180 | 188 | 196 | 220 | 
| Specific Heat Capacity (J/kgK)  | 
      155 | 165 | 175 | 190 | 
| Young’s Modulus (Gpa)  | 
      325 | 315 | 305 | 278 | 
| Specific Electrical  Resistance(uΩm)  | 
      0.047 | 0.045 | 0.042 | 0.035 | 
| Vickers Hardness (HV10)  | 
      300 | 295 | 275 | 255 |