NIMONIC Alloy 80A / NICKEL Alloy 80A (UNS N07080)
Technical Data Sheet
Chemical Composition Limits |
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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.
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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 |
Availability: |
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NIMONIC 80 Plate |
NIMONIC 80 Fittings |
NIMONIC 80 Tube / Pipe |
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NIMONIC 80 Bar |
NIMONIC 80 Sheet |
NIMONIC 80 Coil /Strap |
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NIMONIC 80Fasteners / Flanges |
NIMONIC 80 Powder |
NIMONIC 80 Welding Product |
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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 |
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Introduction
NIMONIC alloys are primarily composed of nickel and chromium. These alloys are known for their high-temperature low-creep and high performance. Additives like aluminium, carbon and titanium are infused into the alloy. The NIMONIC alloy was first developed in 1940 in England. NIMONIC alloys available commercially are NIMONIC 75, NIMONIC 80A, 81, 86, NIMONIC PE11 and 16.
NIMONIC alloy 80A is a wrought, age-hardened alloy that is strengthened by additives like titanium, aluminium and carbon. It is manufactured by high-frequency melting and casting in air. It is similar to NIMONIC alloy 75. It has good corrosion and oxidation resistance. The creep rupture and tensile properties are high at 815°C (1500°F).
This datasheet will look into the chemical composition, properties and applications of NIMONIC alloy 80A.
Chemical Composition
The chemical composition of NIMONIC alloy 80A is given in the following table.
Element |
Content (%) |
Nickel, Ni |
69 |
Chromium, Cr |
18-21 |
Iron, Fe |
≤3 |
Cobalt, Co |
≤2 |
Titanium, Ti |
1.8-2.7 |
Aluminum, Al |
1.0-1.8 |
Others |
Remainder |
Physical Properties
The following table discusses the physical properties of NIMONIC alloy 80A.
Properties |
Metric |
Imperial |
Density |
8.19 gm/cm3 |
0.296 lb/in3 |
Mechanical Properties
The mechanical properties of NIMONIC alloy 80A are tabulated below.
Properties |
Metric |
Imperial |
Tensile strength(annealed) |
1250 MPa |
181 ksi |
Yield strength(annealed) |
780 MPa |
113 ksi |
Elongation at Break |
30% |
30% |
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Other Designations
Some of the other designations that are used to denote NIMONIC alloy 80A are as below:-
- UNS N07080
- BS 3076
- HR1
- HR401
- HR601
- HR201
- ASTM B637
- DIN 17742
- DIN17754
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.
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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.
Disclaimer
Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.
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