The present invention is directed to a set of golf clubs comprising long irons, mid-irons and short irons. The irons have a progressive horizontal CG location. Preferably, the long and MID irons have a CG located between about 1 mm and 3 mm towards the hosel and the short iron CG is located between about 3 mm and 4 mm toward the hosel. Further the irons can have a substantially constant blade width with progressively increasing toe height and progressively decreasing scoreline width.

The present invention is directed to a set of golf clubs comprising long irons, mid irons and short irons. The irons have a progressive horizontal CG location. Preferably, the long and mid irons have a face stabilizing bar and back panel and the CG is located between about 1 mm and 3 mm towards the hosel and the CG in the short irons is located between about 3 mm and 4 mm toward the hosel. Further the long and mid irons irons can have a plurality of apertures in the face stabilizing bar and/or the back wall.

A method of manufacturing a golf club head with a plurality of stiffening members proximate the face, and particularly solid rods or a plate with one or more cutouts, is disclosed herein. The method includes the steps of preparing a wax of a golf club head body having at least one through-hole, a hollow interior, and at least one receiving pocket, preparing waxes of one or more stiffening members, inserting the wax of the stiffening members into the through-hole and seating its opposite end in the receiving pocket, bonding each of the stiffening members to the body with an adhesive material to form a combined wax mold, and casting a golf club head from the combined wax mold.

A method of manufacturing a golf club head with a plurality of stiffening members proximate the face, and particularly solid rods or a plate with one or more cutouts, is disclosed herein. The method includes the steps of preparing a wax of a golf club head body having at least one through-hole, a hollow interior, and at least one receiving pocket, preparing waxes of one or more stiffening members, inserting the wax of the stiffening members into the through-hole and seating its opposite end in the receiving pocket, bonding each of the stiffening members to the body with an adhesive material to form a combined wax mold, and casting a golf club head from the combined wax mold.

A method of manufacturing a forged iron type golf club head with a cavity. The method of manufacturing comprises forming a billet into an intermediate club head body with a strike face comprising an upper region and a lower region; hot pressing a cavity into the rear portion of the intermediate body; and bending the strike face of the intermediate club head body to form a golf club head with a cavity and a planar strike face. Other embodiments are disclosed.

A method of manufacturing a forged iron type golf club head with a cavity. The method of manufacturing comprises forming a billet into an intermediate club head body with a strike face comprising an upper region and a lower region; hot pressing a cavity into the rear portion of the intermediate body; and bending the strike face of the intermediate club head body to form a golf club head with a cavity and a planar strike face. Other embodiments are disclosed.

A co-forged iron type golf club is disclosed. More specifically, the present invention discloses a co-forged iron type golf club with the body portion made out of a first material and at least one weight adjustment portion monolithically encased within the body portion of the co-forged iron type golf club head without the need for secondary attachment or machining operations. The present invention also includes a combination internal cavities and weight adjustment portions that improve the inertial and performance attributes of the iron type golf club head.

A method has acts of providing a blank of head, providing a reinforcement element, combining the blank of head and the reinforcement element, and co-forging. The blank of head is made of a material having a hardness ranging from HRB50 to HRB105 measured by Rockwell Hardness Test and being softer than HRB105 and has a recess. The reinforcement element is made of a material having a hardness ranging from HRC15 to HRC55 measured by Rockwell Hardness Test. The reinforcement element is put into the recess in the blank of head, and an inner surface of the recess and the reinforcement element are combined securely with each other completely by a welding process. The blank of head combined with the reinforcement element is put into a mold, is heated to 700° C. to 1100° C., and is applied with a co-forging process to form an eutectic bonding by thermocompression.

A method has acts of providing a blank of head, providing a reinforcement element, combining the blank of head and the reinforcement element, and co-forging. The blank of head is made of a material having a hardness ranging from HRB50 to HRB105 measured by Rockwell Hardness Test and being softer than HRB105 and has a recess. The reinforcement element is made of a material having a hardness ranging from HRC15 to HRC55 measured by Rockwell Hardness Test. The reinforcement element is put into the recess in the blank of head, and an inner surface of the recess and the reinforcement element are combined securely with each other completely by a welding process. The blank of head combined with the reinforcement element is put into a mold, is heated to 700° C. to 1100° C., and is applied with a co-forging process to form an eutectic bonding by thermocompression.

Methods of manufacturing a golf club head comprising one or more stiffening members proximate the face, and particularly solid rods or a plate with one or more cutouts, is disclosed herein. One method comprises the steps of preparing a wax mold of a golf club head including a plate stiffening member with excess material, casting the golf club head, and machining away the excess material. Another method comprises the steps of casting a golf club body, providing a plate stiffening member, providing a face component such as a face cup, tack welding the plate stiffening member and the face component to the golf club body, and welding these parts together.