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Product classification
Gh4098
GH4098 is a nickel-based precipitation hardening high-temperature alloy, specifically designed to withstand extreme high-temperature environments. Its main application areas include high-temperature critical components in aerospace and missile engines. The chemical composition of the GH4098 alloy mainly includes elements such as nickel (Ni), chromium (Cr), cobalt (Co), molybdenum (Mo), tungsten (W), aluminum (Al), titanium (Ti), and niobium (Nb). The combination of these elements endows the alloy with excellent high-temperature strength, oxidation resistance, and thermal corrosion resistance.
Classification:
Key words:
Superalloy | Inkenel | Hastelloy | Inkloy | Precision Alloy Series
Product Parameters
GH4098 is a nickel-based precipitation hardening high-temperature alloy, specifically designed to withstand extreme high-temperature environments, with its main application areas including high-temperature critical components in aviation and missile engines.
Chemical Composition
The chemical composition of GH4098 alloy mainly includes elements such as nickel (Ni), chromium (Cr), cobalt (Co), molybdenum (Mo), tungsten (W), aluminum (Al), titanium (Ti), and niobium (Nb). The combination of these elements gives the alloy excellent high-temperature strength, oxidation resistance, and thermal corrosion resistance.
Physical Properties
Density: approximately 8.2 g/cm³
Melting Point: above 1300°C
Thermal Conductivity: relatively low, which helps maintain good thermal stability in high-temperature environments.
Coefficient of Thermal Expansion: moderate, which helps reduce thermal stress caused by temperature changes.
Mechanical Properties
High-Temperature Strength: GH4098 alloy can maintain high strength and toughness at high temperatures (such as 1000°C), making it suitable for parts that endure high temperatures and pressures.
Oxidation Resistance: The oxide film formed on the surface of the alloy effectively prevents further oxidation, extending the lifespan of the parts.
Thermal Corrosion Resistance: Performs excellently in corrosive atmospheres containing sulfur, chlorine, etc., suitable for harsh environments like engine combustion chambers.
Machinability: The alloy has good hot and cold working properties and can be processed into the desired shape through forging, extrusion, heat treatment, and other methods.
Heat Treatment Process
The performance of GH4098 alloy can be optimized through solution treatment and aging treatment. Solution treatment usually involves high-temperature heating followed by rapid cooling to achieve a homogeneous microstructure; aging treatment is conducted at lower temperatures to promote the precipitation of strengthening phases, enhancing the strength and hardness of the alloy.
Application Areas
Turbine Blades: Used in the turbine section of aviation and missile engines, enduring impacts from high-speed rotation and high-temperature airflow.
Insulation Screens: Barriers that protect the interior of the engine from direct impacts of high-temperature airflow.
Nozzles: Parts of the engine that eject high-temperature gases, enduring extremely high thermal loads and mechanical stresses.
Afterburner Combustion Chamber: Parts used to increase engine thrust, with extremely high internal temperatures and stringent requirements for high-temperature performance of materials.
Manufacturing Standards
The manufacturing and inspection of GH4098 alloy follow relevant national standards, such as GB/T 14992—Classification and Naming Methods for High-Temperature Alloys and Intermetallic Compounds. Shanghai Bohu's GH4098 alloy occupies an important position in the aviation and aerospace industries due to its outstanding high-temperature performance and machinability, making it an indispensable material for manufacturing high-performance engines.
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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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