GH4049高温合金

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Product information

Grade: GH4049
Steel Manufacturer: Haynes; SMC; ATI; VDM; Outokumpu; NYK; Jinri Tiefu, Northeast Special Steel, etc.
GH4049 (GH4049 superalloy) is a precipitation-hardening type superalloy with a nickel-cobalt-chromium matrix. Its designed working temperature can reach 950℃, and it possesses excellent high-temperature strength, creep resistance, and oxidation resistance, and is widely used in high-temperature components such as gas turbine blades. ‌
Chemical Composition and Strengthening Mechanism
This alloy achieves its strength through precise control of the Al/Ti ratio (3.7—4.4% Al + 1.4—1.9% Ti) to form γ′ phase (Ni₃(Al,Ti)), combined with Co (14—16%) to enhance the γ′ phase precipitation efficiency, forming a triple strengthening mechanism:
‌Ageing Strengthening‌: The γ′ phase provides high-temperature strength, especially showing outstanding performance in the range of 650—950℃ ‌
‌Solution Strengthening‌: Mo (5—6%) and W (5—7%) are incorporated into the matrix to enhance creep resistance ‌
‌Grain Boundary Strengthening‌: B (≤0.025%) purifies the grain boundaries and inhibits crack propagation ‌12 Mechanical properties
High-temperature strength: Tensile strength ≥ 570 MPa at 950℃, and endurance strength (900℃/275 MPa) ≥ 20 hours ‌
Creep resistance: Creep strength ≥ 150 MPa at 650℃ for 100 hours ‌
Elongation rate: Specific numerical value is not specified, but the plasticity can be improved through process optimization after heat processing ‌23
Antioxidation and corrosion resistance
Cr (9.5 - 11%) forms a dense Cr₂O₃ protective film at high temperatures, effectively reducing the oxidation rate. The antioxidant performance is stable below 1000℃ ‌
Processing and application
The microstructure uniformity needs to be optimized through electroslag remelting or vacuum self-dissolution treatment. It is suitable for manufacturing gas turbine blades, high-temperature pipelines, etc., and can withstand a short-term temperature of 1000℃

Product parameter

Chemical composition

Nickel (Ni): Minor component (as a matrix element) 
Cobalt (Co): 14 - 16% 
Chromium (Cr): 9.5 - 11% 
Molybdenum (Mo): 5 - 6% 
Tungsten (W): 5 - 7% 
Aluminum (Al): 3.7 - 4.4% 
Titanium (Ti): 1.4 - 1.9% 
Vanadium (V): 0.2 - 0.5% 
Carbon (C): 0.04 - 0.10% 
Other elements: Silicon (Si), Manganese (Mn), Phosphorus (P), Sulfur (S), Copper (Cu), Iron (Fe), Boron (B), etc. as trace additions 
Key element functions 
Cobalt and nickel synergy: Enhance the precipitation efficiency of γ′ phase, increase high-temperature strength and creep resistance. 
Chromium: Form a dense oxide layer, improve oxidation resistance and corrosion resistance. 
Molybdenum and tungsten: Through solid solution strengthening, enhance high-temperature creep resistance and ultimate yield strength. 
Aluminum and titanium: Form γ′ strengthening phase, significantly increase high-temperature strength in the range of 650 - 950℃.

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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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From steel procurement, processing, logistics, warehousing, 
Shiyu Metal has a perfect management system, tailor-made solutions for each customer, strictly control each link, to ensure safe, efficient and accurate product delivery to customers;




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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.