Golf club head

A golf club head comprising:

• a head body;
• and
• a face plate fixed to the head body,
• wherein:
• the face plate includes a plate front surface having a hitting face, a plate back surface which is a surface opposite to the plate front surface, and a plate side surface;
• the plate back surface includes a center of figure;
• the head body includes a receiving surface which supports the plate back surface from a rear;
• an outer peripheral edge part of the plate back surface includes a projection part which abuts on the receiving surface;
• the head body further includes:
• a body side surface that is opposed to the plate side surface, and the body side surface is provided over a whole circumference of the face plate;
• and
• a plastic deforming part,
• wherein a peripheral part of the plate front surface includes a level difference surface that is located at a rear with respect to the hitting face, and the plastic deforming part is located at a front of the level difference surface,
• wherein a plate thickness of the projection part is greater than a plate thickness of an inner side part that is located on an inner side of the outer peripheral edge part, and
• wherein a toe-side region, a top-side region, and a sole-side region of the projection part are defined as a first section, and a heel-side region of the projection part is defined as a second section, and wherein a width of the projection part is varied in the first section.