Castle Metals stocks Alloy 4150 in rounds, squares and flats throughout distribution network, which spans the United States, Mexico, Canada, France, U.K, Singapore, and Shanghai. When customers call us about 4150, sometimes we also hear about their struggles achieving specific material properties. When Castle hears this, delivering custom material properties by thermal or mechanical treatment can be a solution we discuss with you. Alloy 4150 is a direct hardening alloy which allows flame and induction hardening. Direct Hardening alloys can be quenched and tempered to obtain a wide range of hardness, ductility, and strength levels while also being able to resist stress. Alloy 4150 develops good hardness and uniform strength while also being easy to machine. The Telcut 50® Alloy is the same as Alloy 4150 but with a double machining additive. It is used for heavily machined applications like screw machine parts and has a machinability rating of 100%. Lower cycle times, less tool wear, better surface finish, and improved productivity are achieved with no sacrifice in mechanical properties or heat treat response. This strong alloy is used for its good hardness penetration and hardness uniformity. Its high machinability and ability to maintain its properties at high temperatures make this alloy useful in many industries.