GOLF CLUB HEAD OR OTHER BALL STRIKING DEVICE WITH THERMOREACTIVE FACE

摘要

A ball striking device (100), such as a golf club, includes a head (102) that includes a face (112) having a ball striking surface configured for striking a ball (106) and a body (108) connected to the face and extending rearward from the face. The face has an area of highest response (127) located proximate a center of the ball striking surface. The face is formed of a first material and a second material that forms at least a portion of the area of highest response. The second material has a thermal modulus response that is different from a thermal modulus response of the first material.