Golf club head with multi-material face

Abstract

A metal wood golf club with a striking face portion made from more than one material is disclosed. More specifically, due to the unique construction of the striking face portion having multiple materials, the present invention utilizes diffusion bonding, liquid interface diffusion, or even super plastic forming techniques to achieve the desirable bond between the more than one material used to form the striking face. The different materials could even be the same base material with different compositions as long as they have different Young's modulus.

What is claimed is: 
     
         1 . A golf club head comprising:
 a striking face portion located at a frontal portion of said golf club head; and   a body portion attached to an aft portion of said striking face portion;   wherein said striking face portion further comprises;
 a first titanium material, and 
 a second titanium material; 
   wherein said second titanium material has a higher Young's modulus than said first titanium material.   
     
     
         2 . The golf club head of  claim 1 , wherein said first titanium material may generally have a Young's modulus of less than about 110 GPa. 
     
     
         3 . The golf club head of  claim 2 , wherein said first titanium material may have a Young's modulus of less than about 105 GPa. 
     
     
         4 . The golf club head of  claim 3 , wherein said first titanium material may have a Young's modulus of less than about 100 GPa. 
     
     
         5 . The golf club head of  claim 2 , wherein said second titanium material may generally have a Young's modulus of greater than about 110 GPa. 
     
     
         6 . The golf club head of  claim 5 , wherein said second titanium material may generally have a Young's modulus of greater than about 115 GPa. 
     
     
         7 . The golf club head of  claim 6 , wherein said second titanium material may generally have a Young's modulus of greater than about 120 GPa. 
     
     
         8 . The golf club head of  claim 1 , wherein said first titanium material and said second titanium material are joined together using diffusion bonding. 
     
     
         9 . The golf club head of  claim 1 , wherein said first titanium material and said second titanium material are joined together using liquid interface diffusion bonding. 
     
     
         10 . The golf club head of  claim 1 , wherein said first titanium material and said second titanium material are joined together using super plastic forming. 
     
     
         11 . A golf club head comprising:
 a striking face portion located at a frontal portion of said golf club head; and   a body portion attached to an aft portion of said striking face portion;   wherein said striking face portion further comprises;
 a first titanium material, and 
 a second titanium material; 
   wherein said first titanium material and said second titanium material are joined together using diffusion bonding.   
     
     
         12 . The golf club head of  claim 11 , wherein first titanium material may generally have a Young's modulus of less than about 110 GPa. 
     
     
         13 . The golf club head of  claim 12 , wherein said first titanium material may have a Young's modulus of less than about 105 GPa. 
     
     
         14 . The golf club head of  claim 13 , wherein said first titanium material may have a Young's modulus of less than about 100 GPa. 
     
     
         15 . The golf club head of  claim 12 , wherein said second titanium material may generally have a Young's modulus of greater than about 110 GPa. 
     
     
         16 . The golf club head of  claim 15 , wherein said second titanium material may generally have a Young's modulus of greater than about 115 GPa. 
     
     
         17 . The golf club head of  claim 16 , wherein said second titanium material may generally have a Young's modulus of greater than about 120 GPa.