Nickel Alloys, Including Nickel-Based Superalloys Nickel alloys are
used in a variety of structural applications that usually require specific corrosion resistance,
and strength and toughness at temperature extremes as great as 2000°F
(1093°C) and as low as -400°F (-240°C).
Typical physical properties are given in Appendix C-15. The nickel and Duranickel
alloys contain over 94 percent nickel. Monel represents a series of
nickel–copper alloys, based on the mutual solubility of these two elements in all proportions.
They are strong and tough at subzero temperatures, and especially resistant
to stress corrosion cracking (Section 9.5). Hastelloy designates a series of Ni–Mo
and Ni–Mo–Cr superalloys. Several Hastelloys resist oxidation and maintain useful
strength and creep properties in the range of 2000°F (1093°C). The Inconel, Incoloy,
Rene, and Udimet alloys listed in Appendix C-15 are Ni–Cr and Ni–Cr–Fe alloys.