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By
Steve Pike,
PGA.com Senior Writer
05.08.2005
03:57 pm (ET)
The new CG4 irons represent Cleveland Golf's first foray into game-improvement irons made with light-density CMM-brand metal, company officials said. The proprietary CMM metal was the industry's first light-density steel, and is the same material used in the Cleveland CG10 wedges, as well as CG1 and CG2 irons. The CMM metal, according to Cleveland Golf, contains microscopic carbon spheres that are suspended within the metal to help create a matrix material that is 10 percent less dense and 15 percent softer than the traditional carbon steel used in cast and forged club heads. The light-density properties of CMM metal, Cleveland Golf said, allowed its designers to redistribute 25 grams of discretionary weight to the most critical areas of the club head for optimum performance. CMM metal contains 17 times more carbon than traditional carbon steel, officials said, which not only leads to greater vibration absorption, but also gives these irons a softer feel at impact. The overall design of the CG4 irons, combined with the benefits of CMM metal, help create an iron with an exceptionally low and deep center of gravity (CG) and a moment of inertia (MOI) that is higher than any other iron in its class, Cleveland said. The wider sole and cavity-back design of these irons also gives them increased stability at impact and a larger sweet spot for added forgiveness on off-center shots. The CG4 irons carry a suggested retail price of $864 (steel) and $1,000 (graphite), and begin shipping June 1. Copyright 2005 PGA.com. All rights reserved.
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