Carpenter Technology Corp., Wyomissing, Pa., introduces PremoMax, a premium melted, quenched and tempered, cost-effective alloy steel that provides high strength, excellent impact toughness, and good hardenability in large section sizes. Developed for use in multiple downhole drilling applications such as mud motor shafts and related components, it demonstrates superior performance in challenging environments.
PremoMax composition is C 0.22, Mn 2.0, Si 1.0, Cr 2.0, Ni 0.70, Mo 0.20, V 0.35, Cu 0.50. Its moderate carbon content facilitates weldability, while vacuum arc remelting ensures superior cleanliness, excellent high-cycle fatigue strength, and outstanding fracture toughness. Machinability and weldability, coupled with strength, hardness, and fatigue resistance, make PremoMax alloy a cost-effective and durable drilling solution for rigid formation and high-rotation penetration demands. PremoMax is considered to be a superior alternative to 4330 V.
