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Product classification
Gh4098
GH4098 is a Ni-Cr based precipitation hardening deformation high-temperature alloy, which exhibits excellent performance in high-temperature environments, with a long-term operating temperature of up to 1000°C. Due to its outstanding comprehensive properties, this alloy has been widely used in aerospace, petrochemical, and nuclear industries.
Classification:
Key words:
Superalloy | Inkenel | Hastelloy | Inkloy | Precision Alloy Series
Product Parameters
GH4098 is a Ni-Cr based precipitation hardened deformation high-temperature alloy, which has excellent performance in high-temperature environments, with a long-term working temperature of up to 1000°C. Due to its outstanding comprehensive performance, this alloy has been widely used in aerospace, petrochemical, nuclear industry, and other fields.
Alloy Composition and Characteristics
GH4098 incorporates elements such as tungsten, molybdenum, chromium, and cobalt for solid solution strengthening, while aluminum, titanium, and niobium are added to form γ' phase precipitation strengthening phase, along with trace amounts of boron and cerium to strengthen the grain boundaries. The combined effect of these elements gives GH4098 high strength at room and elevated temperatures, excellent oxidation resistance, and good hot working and welding performance.
Chemical Composition
The chemical composition of GH4098 includes carbon (C), chromium (Cr), nickel (Ni), cobalt (Co), tungsten (W), molybdenum (Mo), aluminum (Al), titanium (Ti), iron (Fe), niobium (Nb), cerium (Ce), boron (B), manganese (Mn), silicon (Si), phosphorus (P), and sulfur (S). Among these, nickel is the main component, and the contents of chromium, cobalt, tungsten, and molybdenum are also relatively high, significantly enhancing the performance of the alloy.
Physical Properties
The density of GH4098 is approximately 8.40 g/cm³, and it is non-magnetic. In air, the oxidation rates of this alloy at 1000°C and 1100°C are 0.368 g/(㎡·h) and 0.715 g/(㎡·h), respectively, demonstrating good oxidation resistance.
Heat Treatment and Forming Process
The heat treatment regime for GH4098 includes solution treatment and aging treatment. Solution treatment is typically conducted between 1080°C and 1120°C, followed by air cooling or water cooling. Aging treatment is performed at 760°C ± 20°C, followed by air cooling. These heat treatment processes help improve the mechanical properties and stability of the alloy.
In terms of forming processes, GH4098 can undergo hot deformation and cold deformation, with a deformation temperature range of 950°C to 1180°C, followed by air cooling. Various specifications of products such as hot-rolled and forged bars, hot-rolled plates, cold-rolled plates, and strips are available.
Welding Performance
GH4098 has good welding performance and can be welded using methods such as argon arc welding, spot welding, roll welding, and electron beam welding. It is recommended to use filler materials of the same type as the base metal or similar alloys to ensure the quality and performance of the weld joints.
Machining and Grinding Performance
GH4098 can be satisfactorily machined and ground. This provides good processing performance during manufacturing, facilitating the production of various complex parts and components.
Application Fields
GH4098 is mainly used to manufacture high-temperature components such as turbine blades, thermal shields, tail nozzles, and afterburner combustion chambers for aircraft and missile engines. Additionally, it is used in engine baffles, stiffeners, aircraft fasteners, and guide vanes made through cold stamping and welding. In the petrochemical and nuclear industries, GH4098 also plays an important role in manufacturing high-temperature and corrosion-resistant equipment and components.
Conclusion
GH4098 plays an important role in various industrial fields due to its excellent high-temperature performance, good processing performance, and stable welding performance. With technological advancements and industrial development, the application range of GH4098 will further expand, providing more reliable solutions for engineering problems in high-temperature and high-pressure environments. At the same time, research and development on GH4098 will continue to improve its performance and reduce costs to meet the more stringent application demands of the future.
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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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