Patent ID: 6986715

Claim:
A golf club head comprising: a body having a crown, a sole, a ribbon and a front wall with an opening, the crown having a thickness of 0.035 inch to 0.045 inch, the sole having a thickness of 0.035 inch to 0.045 inch, the body composed of a cast titanium alloy material, the crown the sole, the ribbon and the front wall defining a hollow interior; and a striking plate insert comprising a first layer and a second layer, the first layer composed of titanium material, the first layer providing an outer striding face of the golf club head, the second layer composed of an aluminum material and having a lower yield strength than the yield strength of the first layer, the first layer and the second layer joined by an explosion bonding process, whereby the yield strength of the striking plate insert in its entirety is greater than the yield strength of each of the first layer and the second layer; and an internal hosel positioned within the hollow interior of the body, the internal hosel extending from the crown toward the sole, wherein the golf club head has a volume ranging from 200 cubic centimeters to 500 cubic centimeters, a mass less than 225 grams, a height ranging from 2.0 inches to 3.5 inches, a width ranging from 4.0 inches to 5.0 inches, a coefficient of restitution ranging from 0.82 to 0.94, a moment of inertia, Izz, about the Z axis through the center of gravity of the golf club head ranging from 3400 g-cm2 to 3900 g-cm 2 .