Hot Rolled High Temperature Nimonic Alloy 90 Uns N07080 Nickel Alloy Plate/Sheet Alloy

Hot Rolled High Temperature Nimonic Alloy 90 Uns N07080 Nickel Alloy Plate/Sheet Alloy

1. Overview of the Alloy

The hot - rolled high - temperature Nimonic Alloy 90 (UNS N07080) nickel alloy plate/sheet is a remarkable product engineered for high - performance applications. Nimonic Alloy 90 is a precipitation - hardenable nickel - chromium - cobalt alloy with additions of titanium and aluminum. This alloy is well - known for its outstanding resistance to high - temperature oxidation, creep, and stress - rupture properties. It is the result of advanced metallurgical research and manufacturing techniques, designed to meet the rigorous demands of various industries.

2. Chemical Composition

• Nickel (Ni): As the base metal, nickel provides a stable matrix for the alloy. It offers excellent corrosion resistance and ductility, which are essential for the overall performance of the plate/sheet.
• Chromium (Cr): Chromium is a key element for oxidation resistance. It forms a protective oxide layer on the surface of the alloy when exposed to high temperatures, preventing further oxidation and degradation.
• Cobalt (Co): Cobalt enhances the high - temperature strength and creep resistance of the alloy. It helps to maintain the mechanical properties of the material even under extreme conditions.
• Titanium (Ti) and Aluminum (Al): These elements are added to form gamma - prime (γ') precipitates during heat treatment. The gamma - prime phase is responsible for the precipitation hardening of the alloy, significantly increasing its strength at high temperatures.

3. Physical and Mechanical Properties

• Density: The density of Nimonic Alloy 90 is approximately 8.2 g/cm3. This relatively high density is a characteristic of nickel - based alloys and is related to their high - strength properties.
• Melting Point: The alloy has a melting point in the range of 1320 - 1370°C. This high melting point allows it to be used in applications where exposure to extremely high temperatures is common.
• Tensile Strength: At room temperature, the tensile strength of the hot - rolled plate/sheet can reach up to 1000 - 1200 MPa. Even at elevated temperatures (e.g., 700 - 800°C), it still maintains a high level of tensile strength, making it suitable for high - stress applications.
• Yield Strength: The yield strength is also very impressive, typically around 600 - 800 MPa at room temperature. This indicates the ability of the alloy to withstand significant stress without permanent deformation.
• Elongation: The elongation at break is usually in the range of 20 - 30%. This good ductility ensures that the plate/sheet can be formed and fabricated into various shapes without cracking.

4. Manufacturing Process

The hot - rolling process is a crucial step in the production of Nimonic Alloy 90 plate/sheet. First, the raw materials are carefully selected and melted in an electric arc furnace or a vacuum induction furnace to ensure the desired chemical composition. After melting, the alloy is cast into ingots. These ingots are then heated to a high temperature (usually above 1000°C) and passed through a series of rolling mills. The hot - rolling process reduces the thickness of the ingot and refines the grain structure of the alloy, improving its mechanical properties. After hot - rolling, the plate/sheet may undergo heat treatment, such as solution annealing and aging, to further enhance its strength and other properties.

5. Applications

• Aviation Industry: In the aviation sector, this alloy is used in gas turbine engines. It can be found in components such as turbine blades, vanes, and discs. The high - temperature strength and oxidation resistance of Nimonic Alloy 90 make it ideal for withstanding the harsh environment inside the engine, where temperatures can exceed 1000°C.
• Electronics Industry: In some high - power electronic devices, the alloy can be used as heat sinks or structural components. Its high thermal conductivity and mechanical stability are beneficial for dissipating heat and maintaining the integrity of the device.
• Industrial Applications: In industrial furnaces and heat - treating equipment, the alloy plate/sheet can be used for lining and structural parts. It can resist the high - temperature corrosion and mechanical stress associated with these applications.
• Medical Industry: In certain medical devices that require high - strength and biocompatible materials, Nimonic Alloy 90 may be considered. Although its biocompatibility needs to be further evaluated, its excellent mechanical properties make it a potential candidate for some specialized medical applications.
• Chemical Industry: In chemical processing plants, where exposure to corrosive chemicals and high temperatures is common, this alloy can be used in reactors, pipes, and other equipment. Its corrosion resistance and high - temperature stability ensure long - term performance and reliability.

6. Quality Assurance

The production of Nimonic Alloy 90 plate/sheet adheres to strict quality control standards. Each batch of products undergoes comprehensive testing, including chemical analysis, mechanical property testing, and non - destructive testing. The chemical composition is analyzed using advanced spectroscopy techniques to ensure it meets the specified requirements. Mechanical property tests, such as tensile tests and hardness tests, are conducted to verify the strength and other mechanical characteristics of the plate/sheet. Non - destructive testing methods, such as ultrasonic testing and radiographic testing, are used to detect any internal defects in the material. Only products that pass all these tests are released for sale, ensuring that customers receive high - quality and reliable products.

7. Packaging and Shipping

The plate/sheet is carefully packaged to prevent damage during transportation. It is usually wrapped in protective layers, such as plastic film or paper, to prevent scratches and corrosion. Then, it is placed in wooden crates or steel frames for secure shipping. The packaging is designed to withstand the rigors of long - distance transportation, whether by sea, air, or land. Special attention is paid to ensuring that the products are properly labeled with all the necessary information, including the alloy grade, dimensions, and manufacturing date. This facilitates easy identification and handling at the destination.