Precipitation-hardenable nickel-chromium alloy strengthened by titanium and aluminum additions.
Maintains high tensile and creep-rupture strength at operating temperatures up to 815°C (1500°F).
Offers low cobalt content, making it the specified material for nuclear reactor applications.
Available in multiple forms including bar, sheet, plate, wire, and forging stock
Product Overview
Nimonic 80A is a precipitation-hardenable nickel-chromium alloy strengthened by the addition of titanium and aluminum. Developed in the 1940s, this wrought superalloy exhibits exceptional tensile and creep-rupture properties at temperatures up to 815°C (1500°F), combined with good corrosion and oxidation resistance . While largely superseded by Nimonic 90 and Inconel X-750 for many applications, Nimonic 80A remains the preferred choice for nuclear applications due to its low cobalt content .
Product Details
This age-hardened superalloy exhibits excellent ductility and can be readily formed using conventional methods. It demonstrates good corrosion and oxidation resistance in high-temperature environments, with a density of 8.19 g/cm³ and melting range of 1320-1365°C . Typical applications include gas turbine blades and rings, exhaust valves for internal combustion engines, die-casting inserts, and nuclear boiler tube supports . Full material traceability with mill test certificates is provided upon request.
Chemical Composition
| Element | Content (%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 18.0 – 21.0 |
| Titanium (Ti) | 1.8 – 2.7 |
| Aluminum (Al) | 1.0 – 1.8 |
| Iron (Fe) | 3.0 max |
| Cobalt (Co) | 2.0 max |
| Carbon (C) | 0.04 – 0.10 |
| Manganese (Mn) | 1.0 max |
| Silicon (Si) | 1.0 max |
| Copper (Cu) | 0.2 max |
| Boron (B) | 0.008 max |
| Sulfur (S) | 0.015 max |
Mechanical Properties
| Condition | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|
| Annealed | 800 – 1000 MPa (116 – 145 ksi) | – | – |
| Annealed + Aged | 1200 – 1400 MPa (174 – 203 ksi) | 780 MPa (113 ksi) | 30% |
| Spring Temper | 1300 – 1500 MPa (189 – 218 ksi) | – | – |
| Spring Temper + Aged | 1500 – 1800 MPa (218 – 261 ksi) | – | – |
| Solution Annealed & Aged | 1000 MPa (145 ksi) | 620 MPa (90 ksi) | 20% |
Available Forms
| Product Form | Size Range | Specifications |
|---|---|---|
| Bar & Rod | 3mm – 300mm diameter | ASTM B637, BS HR1 |
| Sheet & Strip | 0.5mm – 5mm thickness | BS HR201 |
| Plate | 5mm – 100mm thickness | BS HR201 |
| Wire | 0.025mm – 21mm diameter | ASTM B637 |
| Pipe & Tube | Custom sizes | BS HR401 |
| Forgings | Custom configurations | ASTM B637 |
