1.1 ,This specification2 covers nickel-iron-chromium alloys in the form of welded, cold-worked, and annealed pipe for general corrosive service and heat-resisting applications. These products are furnished in three alloys: UNS N08120, UNS N08800, and UNS N08810.3 Alloy UNS N08800 is employed normally in service temperatures up to and including 1100 ,°,F (593 ,°,C). Alloys UNS N08120 and UNS N08810 are employed normally in service temperatures above 1100 ,°,F where resistance to creep and rupture is required, and are annealed to develop controlled grain size for optimum properties in this temperature range.