Steel with high strength and toughness.(TECH SPOTLIGHT)

From: Advanced Materials & Processes | Date: July 1, 2006| Author: Fedchun, Vladimir; Razdolsky, Mark; Dilmore, Morris | Copyright information

Ultimate tensile strength of a new medium carbon martensitic steel alloy ranges from 280 to 325 ksi (1932 to 2242 MPa); yield strength is 220 to 260 ksi (1520 to 1794 MPa); elongation is 11 to 16%; and Charpy V-notch impact toughness ranges from 23 to 36 ft-lb (31 to 48 J). Mechanical properties are thus similar to those of Co-Ni-Mo superalloys, AerMet 100, and Marage 250. Copper content is less than 0.6%, and the silicon/copper ratio is in the range of 1.5 to 2.5, with nickel in th...

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