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Nickel-iron-chromium alloys are designated by the UNS N10665 designation. UNS N10665 is a nickel-based alloy that can endure temperatures of up to 1100 degrees Fahrenheit (593 degrees Celsius). When creep and rupture resistance are required at temperatures above 1100°F (593°C), UNS N10665 alloys are annealed to generate regulated grain size for the greatest performance in this temperature range. UNS N10665 is a nickel-iron-chromium-tungsten alloy used for creep and rupture resistance at temperatures above 1100°F (593°C). In this temperature range, it is annealed to acquire the best properties.
Chemical Composition
| UNS |
Element |
Composition, % |
| Ni |
Cu |
Fe |
Mn |
C |
Si |
S |
Cr |
Al |
Ti |
Nb + Ta |
Mo |
P |
W |
Co |
V |
| UNS N10665 |
Ni-Mo Alloy |
balanceB |
... |
2 |
1 |
0.02 |
0.1 |
0.03 |
1 |
... |
... |
... |
26.0-30.0 |
0.04 |
... |
1 |
... |
Mechanical Properties
| Material and Condition |
Maximum Section Thickness, in. (mm) |
Tensile Strength, min, ksi (MPa) |
Yield Strength, 0.2 % Offset, min, ksi (MPa) |
Elongation in 2 in. or 50 mm or 4D, min, % |
| Nickel-molybdenum alloy UNS N10665, solution annealed |
... |
110 (760) |
51 (350) |
40 |