1.1 ,This specification covers rolled precipitation hardenable nickel-iron-chromium-niobium-titanium-aluminum alloy (N09908), nickel-chromium-molybdenum-copper-titanium-niobium alloy (N09925), nickel-chromium-molybdenum-niobium-titanium alloy (N07725) and nickel-chromium-cobalt-titanium-niobium alloy (N07740) plate, sheet, and strip in the annealed condition (temper). Alloy N09908 is used as sheathing for super conductor cables, as tooling for fabrication of such cables, and for other applications requiring a material with low coefficient-of-expansion properties. Alloys N09925 and N07725 are used in sour service conditions in oil and gas applications. Alloy N07740 is used in the construction of high temperature boilers, pressure vessels, and heat exchangers.