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Nickel-iron-chromium alloys are designated by the UNS N08800 designation. UNS N08800 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 N08800 alloys are annealed to generate regulated grain size for the greatest performance in this temperature range. UNS N08800 is a nickel-iron-chromium-tungsten alloy used for creep and rupture resistance at temperatures above 1100°F (593°C). It's annealed to get the best results at this temperature range.
Chemical Composition
| UNS |
Element |
Composition, % |
| Ni |
Cu |
Fe |
Mn |
C |
Si |
S |
Cr |
Al |
Ti |
Nb + Ta |
Mo |
P |
W |
Co |
V |
| UNS N08800 |
Ni Fe-Cr Alloy |
30.0-35.0 |
0.75 |
39.5B min |
1.5 |
0.10 |
1.0 |
0.015 |
19.0-23.0 |
0.15-0.60 |
0.15-0.60 |
... |
... |
... |
... |
... |
... |
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, % |
| UNS N08800, annealed |
... |
75 (517) |
30 (207) |
30 |