Maraging steel having high strength and high toughness

摘要

Cobalt-free maraging steels consist essentially of 15% to 25% nickel, 2% to 8% tungsten, 0.5% to 2.0% titanium, 0.05% to 0.3% aluminum, and the balance iron so that the maraging steels exhibit a yield strength in the range of 240,000 Psi (1656 Mpa) to 265,000 Psi (1826 Mpa) and a Charpy impact energy of about 25 joules.