Carpenter Technology: Cold Rolling PremoMet Alloy into a Gear

Gear manufacturers are beginning to see the benefits from cold formed automotive gears compared to traditional hobbed and forged gears. This video shows Carpenter’s ultra-high strength alloy steel in bar form, PremoMet alloy, being cold rolled into a gear by a gear manufacturer. The advantages of the cold rolling manufacturing method include reduced cycle times, improved yield and excellent surface condition with minimal tooth distortion. Upon testing, the gear withstood higher load capacity with no damage or wear. Visit for more information about specialty alloys manufactured by Carpenter Technology Corporation.