Alloy Wire International
Datasheet: Nimonic® 80A
Nimonic® 80A
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 It has largely been superseded by Nimonic 90 and Inconel X-750, but because of the low Cobalt content, it is still specified for nuclear applications.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.
Available in all profile options
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Largely superseded by Nimonic 90 & Inconel X-750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:
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
The chemical composition of Nimonic® 80A is indicated in the table below:
| Element | Min % | Max % |
|---|---|---|
| C | 0.04 | 0.10 |
| Si | – | 1.00 |
| Mn | – | 1.00 |
| S | – | 0.015 |
| Ag | – | 0.0005 |
| Al | 1.00 | 1.80 |
| B | – | 0.008 |
| Bi | – | 0.0001 |
| Co | – | 2.00 |
| Cr | 18.00 | 21.00 |
| Cu | – | 0.20 |
| Fe | – | 1.50 |
| Pb | – | 0.002 |
| Ti | 1.8 | 2.70 |
| Ni | bal |
Alloy Details
Nimonic® 80A density, melting point, coefficient of expansion, modulus of rigidity, and elasticity is indicated in the table below:
| 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 of finished parts
The typical heat treatment of Nimonic® 80A:
| Condition as supplied by AWI | 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 |
Properties
The typical mechanical properties of Nimonic® 80A:
| 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 |
The above tensile strength ranges are typical. If you require different please ask.
*Trade name of Special Metals Group of Companies ^^ Dynamic applications = active / lively / changing
