Nickel Alloy 80A / Nimonic 80A®
Technical Data Sheet
| Chemical Composition Limits |
| Weight % |
Ni |
Cr |
Ti |
Al |
C |
Si |
Cu |
Fe |
Mn |
Co |
B |
Zr |
S |
| Alloy 80A |
Bal |
18.0-21.0 |
1.8-2.7 |
1.0-1.8 |
0.10 max |
1.0 max |
0.2 max |
3.0 max |
1.0 max |
2.0 max |
0.008 max |
0.15 max |
0.015 max |
Alloy 80A (Nimonic® alloy 80A) is a wrought, age-hardenable nickel-chromium alloy. Alloy 80A is similar to alloy 75 but made precipitation hardenable by additions of aluminium and titanium. Alloy 80A has good corrosion and oxidation resistance and high tensile and creep-rupture properties at temperatures to 815ºC (1500ºF). Vacuum refined versions are also available. Alloy 80A is used for gas-turbine components (blades, rings, discs), bolts, tube supports in nuclear generators, exhaust valves in internal combustion engines and has many other offshore/marine, automotive and electrical applications.
Typical Mechanical Properties
| Material |
Condition |
Ultimate Tensile Strength ksi |
Yield Strength ksi |
Elongation on 4D (min) |
Hardness min |
| Alloy 80A |
Solution Annealed & Precipatation Treated (aged) |
145 |
90 |
20 |
300 HV |
Physical Properties
| Properties |
Metric |
Imperial |
| Density |
8.19 gm/cm3 |
0.296 lb/in3 |
Alloy 80A is available in Round Bar, Flat Bar, Rod, Tube, Plate, Sheet, Strip, Forging Stock and Wire.
Specifications
| Alloy 80A Rod, Bar, Wire and Forging Stock |
BS 3076 HR1, ASTM B 637, AECMA PrEn2188, AECMA PrEn2189, AECMA PrEn 2190, AECMA PrEn 2396, AECMA PrEn2397, AIR 9165-37 |
| Alloy 80A Plate, Sheet and Strip |
BS HR 201, AECMA PrEn2191 |
| Alloy 80A Pipe and Tube |
BS HR 401 |
| Alloy 80A Other |
BS HR 601, BS HR1, DIN 17742, AFNOR NC 20TA, UNS N07080, Werkstoff Nr 2.4952, Werkstoff Nr 2.4631, NIMONIC 80a (trademark), MSRR 7095 and MSRR 7011, MSRR 7013, HR201, HR401, HR601, NA20, VAT80A
|
Fabrication
Machinability
The conventional machining techniques used on iron alloys may be used for this alloy. This alloy work-hardens during machining.
Welding
NIMONIC alloy 80A can be welded using common techniques, using a matching filler metal. A prerequisite for welding is that the metal should be solution treated. Fusion welding by tungsten inert gas welding and metal inert gas welding will be suitable for this alloy.
Hot working
NIMONIC alloy 80A can be hot worked at temperature ranges of 1050-1200°C (1920-2190°F).
Forging
NIMONIC alloy 80A can be hot forged at temperatures in the range of 982-1176°C (1800-2150°F).
Cold working
Cold working may be done on the alloy.
Annealing
NIMONIC alloy 80A should be annealed at 1079°C (1975°F) for about 8 hours and air cooled.
Applications
The NIMONIC alloy 80A is used in the following applications:
Gas turbine engineering
Automobile exhaust valves
Die-casting inserts and cores
Nuclear boiler tube parts.
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