Iron type golf club head

An iron type golf club head comprising:

• a face plate provided with face grooves;
• and
• a head main body arranging the face plate on a front surface thereof, wherein
• the face plate comprises a peripheral edge part firmly fixed to the head main body, and a non-supported part forming an area surrounded by the peripheral edge part and having a back surface apart from the head main body, the non-supported part having a profile shape which comprises:
• a toe side edge extending substantially vertically on a toe portion,
• a heel side edge extending substantially vertically on a heel portion,
• a sole side edge between the toe side edge and the heel side edge on a sole portion extending substantially horizontally, and
• a top side edge between the toe side edge and the heel side edge on a top portion extending in a chevron shape, and
• the non-supported part satisfies the following equations (1), (2), and (3):
• 1.1≦ha/hb≦1.6 (1);
• 1.1×(ha+hb)/2≦hc≦1.5×(ha+hb)/2 (2);
• 18(mm)≦hb≦38 (mm) (3)
• (in which ha is a toe side height (mm) of the non-supported part at a position of an end portion of the face groove closest to the toe side,
• hb is a heel side height (mm) of the non-supported part at a portion of an end portion of the face groove closest to the heel side, and
• hc is an intermediate height (mm) of the non-supported portion at an intermediate position between the end portion on the toe side and the end portion on the heel side).