... 200 is an age- hardenable (maraging) iron-nickel steel combining ultra-high strength, toughness and resistance to crack ... tooling. 3.Machanical propertis Solution Annealed Solution Annealed plus aged 1500F (816C) 900F (482C) 1 hr, AC 3 ... Carbon steel, Duplex and super duplex steel, alloy QT steel, high temperature steel, case hardened steel, Stainless steel, Titanium and its alloy, Die steel, etc2 ...