Inventors:
Ronald E. Bailey - Pittsburgh PA, US
Thomas R. Parayil - New Kensington PA, US
Timothy M. Hackett - Upper St. Clair PA, US
Tong C. Lee - Murrysville PA, US
Assignee:
ATI Properties, Inc. - Albany OR
International Classification:
F41H 5/00, F41H 5/04, B32B 15/04
US Classification:
428682, 428911, 89 3601, 89 3602
Abstract:
Maraging steel compositions, methods of forming the same, and articles formed therefrom comprising, by weight, 15. 0 to 20. 0% Ni, 2. 0 to 6. 0% Mo, 3. 0 to 8. 0% Ti, up to 0. 5% Al, the balance Fe and residual impurities. The composition may be a first layer of a composite plate, and may have a second layer deposited on the first layer, the second layer having a composition comprising, by weight, 15. 0 to 20. 0% Ni, 2. 0 to 6. 0% Mo, 1. 0 to 3. 0 Ti, up to 0. 5% Al, the balance Fe and residual impurities. The first layer may have a hardness value ranging from 58 to 64 RC, and the second layer may have a hardness value ranging from 48 to 54 RC. The first layer may be formed employing powdered metallurgical techniques. Articles formed from the compositions include armored plate.