Nimonic 90 UNS N07090 2.4632 Stainless Steel
Nimonic Alloy 90 (Nimonic 90) is a precipitation hardenable nickel-chromium-cobalt alloy strengthened by the addition of Titanium and Aluminium. Alloy 90 has a high stress rupture strength and creep-resistant at temperature to about 950°C(1740°F). Alloy 90 is typically used on such things as turbine blades, hot working tools and high-temperature springs.
Nimonic 90 is a super alloy of nickel-chromium-cobalt, known for both its strength and its ability to withstand extremely high temperature. Typically used in temperature ranging from 100 degrees Celsius to +650 degrees Celsius, Nimonic 90 is a popular alloy in the aerospace and aircraft industries. It is widely used in such applications as valves in turbo motors and blades and discs in gas turbines.
Alloy Wire International Ltd. is a U.K. wire manufacturer specialising in the production of high performance alloys, mainly Nickel Alloys, but including Cobalt and Titanium Alloys. These alloys might be used in any environment that requires resistance to heat and corrosion but where the mechanical properties of the metal must be retained.
Specification: UNS N07090, Werkstoff Nr. 2.4632, AMS 5829 Welding Wire, BS 3075, NA 19, HR2, HR202, HR402, HR501, HR502, HR503. MSRR 7016 and MSRR 7087, AFNOR NCK 20D
AECMA Pr EN 2295, EN 2296, EN 2297, EN 2298, EN 2299, EN 2400, EN 2401, EN 2412, EN 2669 and EN 2670 Tradenames: Nimonic® 90, Udimet 90 (tm), VAT90.
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Chemical Composition |
| Weight % |
Ni |
Cr |
Co |
Ti |
Al |
C |
Si |
Cu |
Fe |
Mn |
B |
S |
Zr |
Pb |
| Alloy 90 |
Balance |
18.0 - 21.0 |
15.0 - 21.0 |
2.0 - 3.0 |
1.0 - 2.0 |
0.2 max |
1.0 max |
0.2 max |
1.5 max |
1.0 max |
0.02 max |
0.015 max |
0.15 max |
0.0020 max |
Typical Mechanical Properties
| Temperature |
PSI |
MPa |
| 700°C / 1290°F |
52,000 |
360 |
| 750°C / 1380°F |
35,000 |
240 |
| 800°C / 1470°F |
22,000 |
150 |
| 850°C / 1560°F |
11,000 |
75 |
Rupture Strength 1000h
Typical Properties of Nimonic 90
Typical properties of Nimonic 90 are covered in the following table.
| Property |
Metric |
Imperial |
| Density |
8.18 g/cm3 |
0.296 lb/in3 |
| Melting point |
1370 °C |
2500 °F |
| Co-Efficient of Expansion |
12.7 μm/m.°C
(20-100 °C) |
7.1x10-6 in/in.°F
(70-212 °F) |
| Modulus of rigidity |
82.5 kN/mm2 |
11966 ksi |
| Modulus of elasticity |
*213 kN/mm2 |
30894 ksi |
| **227 / 240 kN/mm2 |
32924 / 34810 ksi |
* Solution Annealed + Aged **Spring Temper and Aged
Properties of Supplied Materials and Heat Treated Materials
| Condition of Supply |
Heat Treatment (After Forming) |
| Solution Annealed |
Age Harden at 750°C (1380°F) for 4 hours and air cool. |
| Spring Temper |
Age Harden at 650°C (1200°F) for 4 hours and air cool. |
| Spring Temper |
Age Harden at 600°C (1110°F) for 16 hours and air cool. |
| Condition |
Approx Tensile Strength |
Approx Service Temp. |
| Solution Annealed |
800 - 1000 N/mm2 |
116 - 145 ksi |
– |
– |
| Solution Annealed + aged |
1300 - 1400 N/mm2 |
189 - 203 ksi |
up to 550°C |
up to 1020°F |
| Spring Temper |
1300 - 1500 N/mm2 |
189 - 218 ksi |
– |
– |
| Spring Temper + aged |
1500 - 1800 N/mm2 |
218 - 261 ksi |
up to 350°C |
up to 660°F |
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