A precipitation hardenable martensitic stainless steel that includes, in percent by weight, 11.0 to 12.5 percent chromium, 1.0 to 2.5 percent molybdenum, 0.15 to 0.5 percent titanium, 0.7 to 1.5 percent aluminum, 0.5 to 2.5 percent copper, 9.0 to 11.0 percent nickel, up to 0.02 percent carbon, up to...http://www.google.ca/patents/US20050126662?utm_source=gb-gplus-sharePatent US20050126662 - High strength martensitic stainless steel alloys, methods of forming the same, and articles formed therefrom
