An aluminum-scandium alloy face (65 percent lighter than steel) is bolstered by a urethane cavity; the tungsten heel-and-toe weights add stability ($1,000, graphite, cobragolf.com).
Callaway FT
This sleek, player's iron-style update of the Fusion has a proprietary dense alloy frame that houses a titanium face and a thermoplastic urethane cavity insert ($1,440, steel, callawaygolf.com).
Taylormade R7 CGB Max
The 17-4 stainless-steel face has an inverted-cone design for higher ball speed. The tungsten heel-and-toe weights keep the CG low ($1,300, graphite, taylormadegolf.com).
Mizuno MX-950
The mixed set has tungsten-weighted hybrids, forged hollow middle irons with tungsten sole-weight pads and forged cavity-back short irons ($1,000, graphite, mizunousa.com).