MULTI-PIECE GOLF CLUB HEADS FORMED FROM TITANIUM AND ZIRCONIUM ALLOYS
A golf club head and a method for forming a golf club head are disclosed. The golf club head may include multiple components with varying densities to manipulate the weight, volume, and properties of the golf club head.
1 . A golf club head, comprising:
a first portion comprising a body defining an inner volume, a sole, a crown, and a skirt, wherein the first portion comprises a first material having a first density and a first weight, wherein the first material comprises an alloy comprising titanium, zirconium, or a combination thereof, and wherein the first density ranges from about 7 g/cm 3 to about 8.5 g/cm 3 ; and
a second portion comprising a face, wherein the second portion comprises a second material having a second density less than the first density, wherein the second density is at least about 30 percent less than the first density.
2 . The golf club head of claim 1 , wherein the first material comprises a binary titanium-zirconium alloy.
3 . The golf club head of claim 2 , wherein the binary titanium-zirconium alloy comprises about 25 percent to about 75 percent by weight Zr.
4 . The golf club head of claim 2 , wherein the binary titanium-zirconium alloy comprises about 10 percent to about 19 percent by weight Zr.
5 . The golf club head of claim 1 , wherein the second density ranges from about 4 g/cm 3 to about 5.5 g/cm 3 .
6 . The golf club head of claim 1 , wherein the second material comprises titanium alloy.
7 . A golf club head, comprising:
a first portion comprising a body defining an inner volume, a sole, a crown, and a skirt, wherein the first portion comprises a first material having a first density and a first weight, wherein the first material comprises a binary titanium or zirconium alloy, and wherein the first density ranges from about 6 g/cm 3 to about 9 g/cm 3 ; and
a second portion comprising a face, wherein the second portion comprises a second material having a second density less than the first density.
8 . The golf club head of claim 7 , wherein the first material comprises a binary titanium alloy selected from the group consisting of Ti-Zr, Ti-Hf, Ti-Mo, Ti-Ta, Ti-Nb, and Ti-Cr alloy.
9 . The golf club head of claim 7 , wherein the first material comprises a binary zirconium alloy selected from the group consisting of Zr-W, Zr-Hf, and Zr-Ta.
10 . The golf club head of claim 7 , wherein the second density ranges from about 3.5 to 5.5 g/cm 3 .
11 . The golf club head of claim 7 , wherein the second material comprises titanium alloy.
12 . The golf club head of claim 7 , wherein the second portion has a thickness of less than about 1.0 mm.
13 . A golf club head, comprising:
a first portion comprising a body defining an inner volume, a sole, a crown, and a skirt, wherein the first portion comprises a first material having a first density and a first weight, wherein the first material comprises an alloy comprising titanium, zirconium, or a combination thereof, and wherein the first density ranges from about 6 g/cm 3 to about 9 g/cm 3 ; and
a second portion comprising a face, wherein the second portion comprises a second material having a second density less than the first density by at least about 30 percent.
14 . The golf club head of claim 13 , wherein the first material comprises a binary titanium alloy.
15 . The golf club head of claim 14 , wherein the binary titanium alloy is selected from the group consisting of Ti-Zr, Ti-Hf, Ti-Mo, Ti-Ta, Ti-Nb, and Ti-Cr alloy.
16 . The golf club head of claim 14 , wherein the binary titanium alloy comprises about 25 percent to about 75 percent by weight Zr.
17 . The golf club head of claim 13 , wherein the first density ranges from about 7.5 g/cm 3 to about 8.1 g/cm 3 .
18 . The golf club head of claim 13 , wherein the second density ranges from about 3.5 to 5.5 g/cm 3 .
19 . The golf club head of claim 18 , wherein the second density ranges from about 4.1 to 5.1 g/cm 3 .
20 . The golf club head of claim 13 , wherein the second density is less than the first density by at least about 40 percent.