GH4098高温合金

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Product information

Grade: GH4098
Steel Manufacturer: Haynes; SMC; ATI; VDM; Outokumpu; NYK; Jinri Railway, Fushun/ Northeast Special Steel, etc. 
GH4098 ( GH98 ) is a nickel-based precipitation hardening high-temperature alloy, featuring excellent high-temperature strength, oxidation resistance, and corrosion resistance. Its long-term operating temperature can reach up to 1000℃. Here are its main performance characteristics:
Mechanical properties
‌Tensile strength at room temperature‌: Yield strength ≥ 1200 MPa, elongation ≥ 15%.
‌High-temperature strength‌: At 900℃/200 MPa, the endurance strength can reach over 100 hours, and the tensile strength at 800℃ is ≥ 800 MPa. ‌
‌Hardness and wear resistance‌: Strengthened by elements such as tungsten and molybdenum, it maintains high hardness at both room temperature and high temperatures, suitable for withstanding high pressure and wear conditions. ‌ Physical properties
Melting point: Approximately 1350 - 1400℃.
Density: 8.4 g/cm³.
Coefficient of thermal expansion: Approximately 12 - 13 × 10⁻⁶/℃.
Chemical properties
Antioxidation: Forms a stable oxide film on the surface at high temperatures, effectively preventing further oxidation.
Corrosion resistance: Resistant to acidic, alkaline and sulfur/氯-containing corrosive media, suitable for complex chemical environments.
Processing properties
Hot processing: Can be formed by forging, extrusion, etc., with the processing temperature controlled at 1150 - 1250℃.
Welding properties: Supports various processes such as argon arc welding and electron beam welding, with stable post-weld performance. 
This alloy is widely used in high-temperature components of aircraft engine turbine blades, gas turbine seals, etc., possessing both structural strength and durability.

Product parameter

Chemical composition 
The chemical composition of GH4098 superalloy is based on nickel (Ni), and it mainly contains elements such as chromium (Cr), tungsten (W), molybdenum (Mo), cobalt (Co), aluminum (Al), titanium (Ti), and niobium (Nb). Among them:
Nickel (Ni): As a base element, it provides the corrosion resistance and high-temperature stability of the alloy. 
Chromium (Cr): Enhances oxidation resistance and corrosion resistance. 
Tungsten (W) and Molybdenum (Mo): Through solid solution strengthening, they enhance the high-temperature strength and creep resistance. 
Cobalt (Co): Increases hardness, wear resistance, and thermal stability. 
Aluminum (Al) and Titanium (Ti): Form γ' phase precipitates to strengthen and enhance high-temperature strength. 
Niobium (Nb): Further improves creep resistance. 
Other trace elements include Iron (Fe), Carbon (C), Manganese (Mn), Silicon (Si), Phosphorus (P), Sulfur (S), Cerium (Ce), and Boron (B), which are used to optimize grain boundary strength and overall performance. 
The specific composition ratio may vary depending on the manufacturing process and heat treatment conditions, but the typical range is as follows: 
Chromium (Cr): 17.5 - 19.5% 
Nickel (Ni): The remainder 
Cobalt (Co): 5.0 - 8.0% 
Tungsten (W): 5.5 - 7.0% 
Molybdenum (Mo): 3.5 - 5.0% 
Aluminum (Al): 2.5 - 3.0% 
Titanium (Ti): 1.0 - 1.5%

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COMPANY PROFILE




Shiyu Metal Material Technology Co., Ltd. is a collection of procurement, processing, agent, sales, logistics, warehousing in one of the enterprises, the company has a large-scale spot supply base in China, with domestic and foreign large steel mills and suppliers to maintain good relations of cooperation, with a full range of multi-channel procurement resources.
Shiyu Metal main products: nickel base alloy, Hastelloy, super austenitic stainless steel, duplex stainless steel, cobalt base alloy, pure nickel, titanium and titanium alloy, heat resistant, corrosion resistant alloy and other kinds of steel, a large number of product categories, can meet the size and thickness customization, prefabrication and other diversified needs.
The company has ISO9001 quality certification, the company's product standards include: the United States (UNS) ASTM /ASME, AMS, German DIN/EN, Japan (SUS) JIS and other standards supply, provide the original material certificate. We can supply according to the standards and technical requirements provided by customers to ensure that the goods and specifications are complete to meet the needs of various merchants. From raw materials to finished products, all go through three quality inspection to ensure the qualified rate of finished products. Shiyu Metal strives for perfection in every detail to ensure that the quality of products in different countries and regions around the world can meet international standards. Shiyu Metal has established a good strategic cooperative relationship with the world famous steel mills such as HAYNES, ATI, SPECIALMETALS, VDM, OUTOKUMPU, Japan Metallurgy, Nippon Steel, and Datong Special Steel.
The products supplied by Shiyu Metal are widely used in nuclear power, petrochemical, mechanical engineering, precision processing, aerospace, electronic instruments, medical equipment, automobile manufacturing, environmental protection, wind power application, seawater desalination, shipbuilding industry, paper making machinery, mining engineering, cement manufacturing, metallurgical manufacturing, corrosion resistant environment field, high temperature environment field, mold field, etc. It is a global high-quality supplier of special steel materials.
Shiyu Metal Material Technology Co., Ltd. is committed to the purchase, agent and sales of special steel, and has a perfect special steel sales management system and product quality supervision system. The company has been adhering to the "integrity, innovation, responsibility, win-win" business philosophy, adhere to the "quality first, customer first" service purpose, to provide customers with quality services and high-quality steel products. Shiyu Metal actively participates in the development of domestic steel industry ecology, and is willing to contribute to the development of national special steel.



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SERVICE

From steel procurement, processing, logistics, warehousing, 
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RESOURCE

Shiyu Metal maintains good cooperative relations with medium and large steel mills and suppliers at home and abroad, 

and has established good strategic cooperative relations with world famous steel mills such as the United States, Germany, Finland and Jap.




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Shiyu Metal set procurement, processing, agency, sales, logistics, 

warehousing in one, can provide customers with steel products procurement, processing, logistics and other one-stop services.




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Shiyu Metal operates a wide range of steel products, can provide customers with product size and width customization, prefabrication and other services, perfect product quality supervision system, to ensure high standards of product quality, high quality.