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Product classification
Gh2984
GH2984 is a Fe-Ni-Cr based precipitation hardening deformation high-temperature alloy, with a working temperature of 700°C - 750°C. The alloy is strengthened by solid solution with elements such as Cr, Mo, and Nb, and forms precipitation strengthening phases with a small amount of Al and Ti. This alloy has good long-term strength, oxidation resistance, and corrosion resistance, as well as good hot and cold workability, excellent microstructural stability, and weldability.
Classification:
Key words:
Superalloy | Inkenel | Hastelloy | Inkloy | Precision Alloy Series
Product Parameters
Overview of GH2984 High-Temperature Alloy
GH2984 is a Fe - Ni - Cr based precipitation-hardened deformation high-temperature alloy, with a working temperature of 700℃ - 750℃. The alloy is strengthened by solid solution with elements such as Cr, Mo, Nb, and forms precipitation strengthening phases with a small amount of Al and Ti. This alloy has good long-term strength, oxidation resistance, and corrosion resistance, as well as good hot and cold workability, excellent microstructure stability, and weldability.
I. Chemical Composition
Main Elements
Nickel (Ni): The content is usually over 50%, which can increase the alloy's corrosion resistance and high-temperature strength, and has good ductility and plasticity, maintaining good mechanical properties at high temperatures.
Chromium (Cr): A higher proportion of chromium can form a dense oxide layer, providing corrosion resistance to the alloy and preventing oxidation and corrosion of the material at high temperatures.
Molybdenum (Mo) and Tungsten (W): Important components in the alloy, they have high melting points and good high-temperature performance, which can increase the alloy's high-temperature strength and heat resistance.
Iron (Fe), Copper (Cu), Manganese (Mn), etc.: May also be components of the alloy.
Also contains small amounts of aluminum (Al), titanium (Ti), and other elements to further enhance its thermal strength and oxidation resistance.
The alloy also includes elements such as Vanadium (V), which can enhance the material's high-temperature strength and corrosion resistance.
II. Physical Properties
Density: Approximately 8.09 - 8.4g/cm³.
Melting Point: Ranges between 1310 - 1400℃.
III. Mechanical Properties
At Room Temperature
Tensile Strength: 1100MPa.
Yield Strength: 1000MPa.
Elongation: 12%.
Hardness: 320 - 360HB.
At 750℃
Yield Strength: Maintains 620MPa.
At 200℃
Thermal Conductivity: 13.4W/(m·K).
IV. Heat Treatment Regimes
Regime I: 1100±10℃ for 1 hour, air cooling.
Regime II: 1100±10℃ for 1 hour, air cooling + 750±10℃ for 8 hours, air cooling.
Regime III: 1100±10℃ for 1 hour, air cooling + 750±10℃ for 8 hours, cooling to 650±10℃ at a rate of 50℃ per hour, holding for 16 hours, air cooling.
V. Characteristics
High-Temperature Strength: Exhibits excellent strength and stability at high temperatures, maintaining its mechanical properties, suitable for manufacturing parts under high-temperature stress.
Corrosion Resistance: Has good corrosion resistance, able to withstand corrosion from acidic, alkaline, and chloride environments.
Oxidation Resistance: Exhibits good oxidation resistance, stable in high-temperature oxidation environments, extending service life.
Creep Resistance: Has good creep resistance, able to withstand deformation under high temperatures and sustained stress.
VI. Application Fields
Aerospace Field: Widely used in manufacturing components such as turbine engine blades, bearings, and combustion chambers to withstand harsh conditions of high temperature and high speed.
Chemical Industry: Commonly used in manufacturing components in chemical equipment that need to withstand high temperatures and corrosion, such as reactors, heat exchangers, and pipelines.
Energy Industry: Widely applied in gas turbines, nuclear power equipment, etc., manufacturing high-temperature components such as blades, bearings, and combustion chambers to improve the efficiency and reliability of energy equipment.
Naval and Supercritical Boiler Field: Has been used to manufacture supercritical boiler tubes for naval applications, operating at 700℃ - 750℃. After ten years of testing in naval boilers, the results are good, and it has been put into mass production. Compared to similar nickel-based alloys, it can save ω(Ni) 32% - 34%, and it does not contain cobalt, thus reducing costs.
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Our company mainly deals in nickel based special alloys such as high-temperature alloys, Hastelloy alloys, Inconel alloys, Monel alloys, precision alloys, titanium alloys, etc. We provide zero cutting, machinability, non-standard customization and other needs. If you have any needs, please contact us in a timely manner!
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