Low-density alloy for golf club head

Abstract

A low-density alloy for a golf club head includes 84 wt %-94 wt % of Ti, 6.5 wt %-9.5 wt % of Al, and/or V less than 1.5 wt %, providing a Ti—Al—V-based alloy having a density smaller than 4.40 g/cm 3 . Trace elements such as Mo, Cr, Fe, Si, and B may be added into the Ti—Al—V-based alloy to provide a titanium alloy having a low density and high elongation.

1 . A low-density alloy for a golf club head, comprising 84 wt %-94 wt % of Ti, 6.5 wt %-9.5 wt % of Al, and V less than 1.5 wt %, providing a Ti—Al—V alloy having a density smaller than 4.40 g/cm 3 . 
   
   
       2 . The low-density alloy for a golf club head as claimed in  claim 1  wherein the Ti—Al—V alloy comprises 8 wt % of Al and 1 wt % of V. 
   
   
       3 . The low-density alloy for a golf club head as claimed in  claim 1  wherein the Ti—Al—V alloy further comprises Mo less than 1.2 wt %. 
   
   
       4 . The low-density alloy for a golf club head as claimed in  claim 1  wherein the Ti—Al—V alloy further comprises Cr less than 1.2 wt %. 
   
   
       5 . The low-density alloy for a golf club head as claimed in  claim 1  wherein the Ti—Al—V alloy further comprises Fe less than 0.6 wt %. 
   
   
       6 . The low-density alloy for a golf club head as claimed in  claim 1  wherein the Ti—Al—V alloy further comprises Si less than 0.6 wt %. 
   
   
       7 . The low-density alloy for a golf club head as claimed in  claim 1  wherein the Ti—Al—V alloy further comprises B less than 1.0 wt %. 
   
   
       8 . The low-density alloy for a golf club head as claimed in  claim 1  wherein the Ti—Al—V alloy comprises 7.2 wt %-7.8 wt % of Al and 0.02 wt %-0.06 wt % of V. 
   
   
       9 . The low-density alloy for a golf club head as claimed in  claim 1  wherein the Ti—Al—V alloy further comprises 0.06 wt % of B 4 C.