ThePipingMart Blog Grades Nimonic 80A (UNS N07080) – Composition, Properties, & Uses

Nimonic 80A (UNS N07080) – Composition, Properties, & Uses

Properties of Nimonic 80A

Nimonic 80A is an age-hardenable nickel-chromium alloy with good corrosion and oxidation resistance. This alloy also possesses excellent creep and stress rupture properties, making it ideal for applications with high temperatures. Let’s dive into the specifics of this alloy by breaking down its properties, equivalents, chemical composition, and hardness. Regarding the nimonic 80a price, you can contact our suppliers at thepipingmart.

What is Nimonic 80A?

UNS N07080 is a nickel-chromium alloy with high strength and excellent corrosion resistance. It’s composed of iron, nickel, chromium, and silicon and has a range of uses in highly corrosive industrial environments. Nimonic 80A is especially well-suited for gas turbine application thanks to its temperature resistance up to 800°C (1470°F). Areas, where Nimonic 80A can be used, include chemical plant components, engine exhausts, and marine exhaust systems. The material possesses good creep resistance, which makes it particularly suitable for applications involving thermal cycling or constant exposure to high temperatures.

What Forms is Nimonic 80A Available at Piping Mart?

  • Nimonic 80A Bolts
  • Nimonic 80A Bars
  • Nimonic 80A Fasteners
  • Nimonic 80A Screw

Nimonic 80A Chemical Composition

Nimonic 80A contains nickel (Ni) as its base element and chromium (Cr), contributing to its excellent oxidation resistance properties at higher temperatures while adding strength to the alloy itself. Other elements present include titanium (Ti), aluminum (Al), iron (Fe), manganese (Mn), carbon (C), silicon (Si), and copper (Cu). The exact percentages can vary depending on the manufacturer, but typically they should be between 19%-21% chromium, 14%-17% nickel, 0.75%-1% titanium, 0.-0.8% aluminium, 0.-0.-3% iron, 0.-0.-1% manganese, 0.-0.-4% carbon, 0.-0.–2% silicon, and 0.-0.–1 % copper.

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

Nimonic 80A Properties

Nimonic Alloy has several advantageous properties that make it perfect for certain applications. It exhibits excellent strength at temperatures up to 1000° F (538° C) and good formability and weldability. In addition, this alloy is resistant to sulfur compounds and other corrosive environments. Compared to the similar alloy Nimonic 75, which only has an operating temperature range of up to 800° F (427° C), UNS N0708 offers greater strength at elevated temperatures. This makes it an ideal choice for parts used in jet engines or gas turbine blades that operate in high-temperature environments.

Nimonic 80A Mechanical Properties

This metal alloy has an excellent combination of mechanical properties such as tensile strength (1400 MPa), yield strength (1200 MPa) and elongation (% in 50 mm). The combination of these properties gives NIMONIC Alloy 80A exceptional formability. It can be used for deep drawing or bending operations without compromising its structural integrity or durability, even when exposed to high temperatures or corrosive substances. In addition, this metal alloy has a good heat treatment response, so it can be hardened or tempered for added strength if necessary for specific applications.

Properties Metric Imperial
Tensile strength(annealed) 1250 MPa 181 ksi
Yield strength(annealed) 780 MPa 113 ksi
Elongation at Break 30% 30%

Nimonic 80A Physical Properties

The physical properties of Alloy 80A is a high-end alloy that displays exceptional strength, even at elevated temperatures. Specifically, it has tensile strength and creep resistance of up to 900 MPa and 550 MPa, respectively, making it ideal for especially anaerobic environments such as those with extreme heat. Not only does it prove to be incredibly strong in its preferred environment, but this alloy also yields great resistance against corrosion and oxidation. This makes 30 NIMONIC Alloy 80A an excellent choice for aircraft engine applications, where its strength and durability are essential.

Properties Metric Imperial
Density 8.19 gm/cm3 0.296 lb/in3

Nimonic 80A Equivalent

Some of the other designations that are used to denote NIMONIC alloy 80A are as follows:-

  • UNS N07080
  • BS 3076
  • HR1
  • HR401
  • HR601
  • HR201
  • ASTM B637
  • DIN 17742
  • DIN17754

Nimonic 80A Specifications

Nimonic Alloy 80A Rod, Nimonic 80A Bar, Nimonic 80A Wire and Nimonic 80A Forging Stock BS 3076 HR1, ASTM B 637, AECMA PrEn2188, AECMA PrEn2189, AECMA PrEn 2190, AECMA PrEn 2396, AECMA PrEn2397, AIR 9165-37
Nimonic Alloy 80A Plate, Nimonic 80A Sheet and Strip BS HR 201, AECMA PrEn2191
Nimonic Alloy 80A Pipe and Nimonic 80A Tube BS HR 401
Nimonic 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

Nimonic 80A Uses

80a Nimonic is a superalloy with various uses due to its unmatched combination of strength and corrosion resistance in extreme temperatures. It is often used in gas turbine components, exhaust systems and other aerospace applications, but it can also be found in high-temperature fastening systems. Its ability to withstand wear and tear makes it ideal for parts necessary for heavy industrial applications, such as cars, planes, tanks and ships. Its properties make it a great option for medical implants where durability is a major requirement.

Aerospace Components

Nimonic 80A is a nickel-chromium alloy that is used in the manufacture of aerospace components. This material has excellent strength and corrosion resistance, ideal for aircraft engines and other high-stress components. The material also has a low thermal expansion coefficient, which helps prevent warping or cracking during operation.


Alloy 80A is also commonly used to manufacture fasteners such as bolts and nuts. These fasteners are typically used in highly stressed applications such as engines or structural components, where their corrosion resistance and strength are essential for ensuring safety and performance. Additionally, the material’s low thermal expansion coefficient helps prevent loosening over time due to temperature changes.

Heat Exchangers

UNS N07080 can also be used to manufacture heat exchangers for industrial applications. The material’s high strength and corrosion resistance make it well-suited for this application, as it can withstand the extreme temperatures associated with heat exchange without degrading or corroding over time. Additionally, its low thermal expansion coefficient helps ensure that the heat exchanger remains tight even when exposed to large temperature fluctuations.

Gas Turbines

Superalloy Nimonic 80A is also often used to manufacture gas turbines for power generation applications. The material’s high strength makes it well suited for this application, as it can withstand the extreme pressures associated with gas turbine operation without deforming or failing prematurely. Additionally, its corrosion resistance helps ensure the turbine stays safe and reliable over time, even when exposed to harsh environments such as salt water or humid conditions.

Medical Implants

Nimonic 80A is also sometimes used in medical implants due to its excellent biocompatibility and corrosion resistance properties. This material is often used in spinal implants because it can resist wear over time while still being light enough to not cause discomfort during use. Additionally, its corrosion resistance ensures that these implants remain safe and effective even when exposed to bodily fluids such as blood or sweat.

Corrosion Resistance

80A Nimonic demonstrates excellent corrosion resistance due to its high chromium and nickel content. This alloy can be used in highly corrosive environments, making it a versatile choice for industrial applications. It is also resistant to abrasives, pitting, and crevice corrosion, which may be encountered during operations in certain sectors such as aerospace or marine industries. The superior performance of NIMONIC Alloy 80A in terms of corrosion resistance can help reduce the maintenance required on machines and equipment when exposed to the environment. This can lead to significant cost savings since regular maintenance can be expensive and time-consuming.

Heat Resistance

Nimonic 80A is an alloy made from nickel, chromium and iron that can resist heat. It is popular in the aerospace industry as it can withstand temperatures up to 980°C, making it ideal for applications such as jet engines, rocket propulsion systems and other high-heat tasks. Its resistance to oxidation and corrosion makes it a trusted alloy in these fields. Its reduced creep rate at elevated temperatures makes it an efficient choice when temperature resistance is required. NIMONIC 80A Alloy gives engineers the confidence they need when selecting a material that needs to stand up against excessive amounts of heat.

Nimonic 80a Machinability

Nimonic Alloy 80A machining is one of the greatest challenges engineers face today. It requires a precise combination of cutting tools and know-how to ensure successful machining of this alloy that offers superior strength and toughness at extremely elevated temperatures. This tough metal is often used in aircraft engine components and high-performance turbine blades, making it crucial that high levels of accuracy are achieved with every machining process. Engineers must use specialized tools, such as diamond abrasives, grinding wheels or EDM machines, to cut through the alloy’s complex composition. Additionally, knowing the parameters set for each particular application will help ensure a satisfactory finish with consistent results can be attained each time.

Nimonic 80a Heat Treatment

Nimonic 80A heat treatment is an important step in achieving the desired properties of the alloy. This treatment is done to facilitate precipitation hardening and improve stress-rupture strength. It involves slowly heating the material in the 800–1100°C range, depending on specific processing requirements. Holding for several hours at those temperatures, followed by a rapid cooling process, such as air or water quenching, completes the heat-treatment cycle. This cycle produces a high-strength material with superior creep and oxidation resistance that can be used in extremely high-temperature applications like turbocharger blades and exhaust gas recirculation systems.

Alloy UNS N07080 Welding

Alloy 80A is a highly acclaimed nickel-based superalloy renowned for resisting high temperatures, corrosion, and fatigue. It has been used for welding applications and construction projects requiring extreme heat or unique forming operations. Regarding welding, NIMONIC Alloy 80A has several advantages that other conventional alloys cannot match. With significantly low thermal expansion coefficients during welding operations and exceptional melting points, NIMONIC Alloy 80A allows welders the flexibility they need while providing superior resistance properties. This versatility makes it an ideal choice for a variety of challenging applications.

Nimonic 8Oa Hardness

The hardness of these alloys can vary greatly depending on their composition. Still, typically, they should have a hardness ranging from 25HRC to 33HRC depending on the heat treatment process used during manufacturing or any post-manufacturing machining operations conducted afterwards. Generally speaking, higher concentrations of chromium will result in increased hardness. In comparison, higher nickel concentrations will lead to decreased hardness values, so it’s important to consider this when selecting a specific alloy grade for your application needs.


In conclusion, Nimonic 80A is an age-hardenable nickel-chromium alloy with good corrosion and oxidation resistance. It is ideal for applications that require elevated temperature strength, like jet engines or gas turbine blades. It has numerous equivalents available today, such as Udimet 500(L605) or Pyromet X-750(TMS 705). The exact chemical composition can vary from manufacturer to manufacturer; however, they should contain base elements such as nickel, chromium, titanium, aluminium, iron, manganese, carbon, silicon, and copper. Also, the hardness values of these alloys range from 25HRC to 33HRC depending on the heat treatment process used during manufacturing or any post-manufacturing machining operations conducted afterwards. For these reasons, nimonic 8OA is widely used in aerospace engineering projects due to its superior characteristics compared with other alloys. If you are looking for an alloy that meets your requirements, then nimonic 8OA could be a great option!

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