Nimonic 80A, 2.4952, N07080, Nickel Alloy Spring Wire
Nimonic 80A, 2.4952, N07080, Nickel Alloy Spring Wire
Nimonic 80A is a Nickel-Chromium alloy which is precipitation hardenable. It has largely been superseded by Nimonic 90 and Inconel X-750, but because of the low Cobalt content, it is still specified for nuclear applications. Nimonic 80A performs well in applications where high temperature and continuous stress is a significant consideration. Beyond nuclear applications, it is traditionally used in applications such as gas turbines, as well as for exhaust valves in racing engines and spindles and fasteners for the motorsport sector.
Nimonic 80A is also known as Nicrofer 7520 Ti, Pyromet 80A, Superimphy 80A, and Udimet 80A.
Size
Diameter: 0.1 - 40mm
Shape: round, square, flat, special shaped
Key Features
Nimonic 80A offers the following key features:
Largely superseded by Nimonic 90 & Inconel X-750
Still specified for nuclear applications due to low cobalt content
Age hardenable
High temperature dynamic applications^^
Typical Applications
Nimonic 80A is known to be suitable for the following applications:
Gas turbine components
Nuclear industry
Fasteners
Designations
W.Nr 2.4952
W.Nr 2.4631
UNS N07080
AWS 031
Specifications
ASTM B637
BS 3076 NA 20
BS HR 1
BS HR 601
Chemical Composition
| Element | Min % | Max % |
| C | 0.04 | 0.1 |
| Si | – | 1 |
| Mn | – | 1 |
| S | – | 0.015 |
| Ag | – | 0.0005 |
| Al | 1 | 1.8 |
| B | – | 0.008 |
| Bi | – | 0.0001 |
| Co | – | 2 |
| Cr | 18 | 21 |
| Cu | – | 0.2 |
| Fe | – | 1.5 |
| Pb | – | 0.002 |
| Ti | 1.8 | 2.7 |
| Ni | bal |
Physical Properties
| Density | Melting Point | Coefficient of Expansion | Modulus of Rigidity | Modulus of Elasticity |
| 8.19 g/cm³ | 1365 °C | 12.7 μm/m °C (20 – 100 °C) | 85 kN/mm² | 222 kN/mm² |
| 0.296 lb/in³ | 2490°F | 7.1 x 10-6 in/in °F (70 – 212 °F) | 12328 ksi | 32199 ksi |
Heat treatment
| Condition | Type | Temperature | Time | Cooling |
| Annealed | Age Harden | 700 °C (1290 °F) | 16 Hr | Air |
| Spring Temper | Age Harden | 600 °C (1110 °F) | 16 Hr | Air |
Mechanical Properties
| Annealed | ||
| Approx. tensile strength | <1000 N/mm² | <145 ksi |
| Approx. operating temperature depending on load** and environment | – | – |
| Annealed + Aged | ||
| Approx. tensile strength | 1200 – 1400 N/mm² | 174 – 203 ksi |
| Approx. operating temperature depending on load** and environment | up to 550 °C | up to 1020 °F |
| Spring Temper | ||
| Approx. tensile strength | 1300 – 1500 N/mm² | 189 – 218 ksi |
| Approx. operating temperature depending on load** and environment | – | – |
| Spring Temper + Aged | ||
| Approx. tensile strength | 1500 – 1800 N/mm² | 218 – 261 ksi |
| Approx. operating temperature depending on load** and environment | up to 350 °C | up to 660 °F |
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