Patent ID: 7338389

Claim:
An iron golf club head comprising: a periphery member composed of a first metal material having a density between 8 g/cm 3 and 12 g/cm 3 , the periphery member having a volume percentage of the golf club head ranging from 15% to 50%, and a mass percentage of the golf club head ranging from 50% to 80%, the periphery member defining an opening; a central member disposed in the opening of the periphery member, the central member being composed of a non-metal material and having a volume percentage of the golf club head ranging from 25% to 75%, and a mass percentage of the golf club head ranging from 10% to 30%; and a face plate composed of a second metal material, the second metal material having a lower density than the first metal material, the face plate being mounted in the opening of the periphery member and disposed over the central member, the face plate having a thickness between 0.040 inch and 0.250 inch; wherein the club head has a moment of inertia Ixx through the center of gravity of at least 2600 g-cm 2 and a moment of inertia Izz through the center of gravity of at least 2400 g-cm 2 , and the golf club head has a total volume ranging from 40 cm 3 to 60 cm 3 .