GH4710高温合金

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Product information

Grade: GH4710
Steel Manufacturer: Haynes; SMC; ATI; VDM; Outokumpu; NYK; Jinri Tiefu, Fushun / Northeast Special Steel
GH4710 superalloy is a precipitation-hardening deformation superalloy based on nickel, featuring excellent high-temperature strength, oxidation resistance, and fatigue resistance. It is mainly used in key components of aircraft engines. 
Mechanical Properties
‌High Temperature Strength‌: In the range of 650°C to 950°C, the tensile strength can reach over 1300 MPa, and the strength retention rate at 700°C is over 85%. ‌
‌Yield Strength‌: The yield strength at room temperature exceeds 1200 MPa, and it still maintains a high strength at 750°C. ‌
‌Ductile Strength‌: The ductile strength at 750°C/300 MPa conditions can last for more than 200 hours. ‌
High Temperature Stability
‌Oxidation Resistance‌: A dense alumina film and chromium oxide film form on the surface, effectively preventing further oxidation. ‌
‌Thermal Stability‌: Small dimensional changes and high tissue stability allow it to withstand severe temperature cycling conditions. ‌
Processing Performance
‌Forging Performance‌: The billet needs to be heated to 1120°C - 1160°C, the final forging temperature should be no less than 950°C, and the total deformation should be ≥ 60%. ‌
‌Heat Treatment‌: The solid solution + aging process (1150°C ± 10°C/4h + 800°C ± 10°C/16h) is adopted to ensure the formation of γ' phase. ‌
Application Domains
It is mainly used for core components of aircraft engines such as turbine discs, compressor discs, and ring-shaped parts. Typical applications include a turbine disc with a diameter of 800mm, which can withstand huge centrifugal force at 650°C - 750°C.

Product parameter

Chemical properties 
The chemical properties of GH4710 superalloy are mainly reflected in its composition and high-temperature stability:
Composition
The base element is nickel (Ni), accounting for 50% - 55%. Chromium (Cr) is added at 14% - 17% to enhance oxidation resistance, and cobalt (Co) at 10% - 12% to increase high-temperature strength. Additionally, molybdenum (Mo) at 5% - 7% and tungsten (W) at 5% - 6% are used for solid solution strengthening to increase the material's strength. Aluminum (Al) at 2.5% - 3.5% and titanium (Ti) at 2.5% - 3.5% form the γ' phase (Ni₃(Al,Ti)) for precipitation strengthening. Trace elements such as boron (B) and cerium (Ce) further optimize the grain boundary properties.
High-temperature stability
Within the temperature range of 700°C to 950°C, the material can still maintain excellent performance:
The room temperature tensile strength is ≥ 1350 MPa, and the strength retention rate at 700°C is over 85%;
The endurance strength can reach more than 200 hours under the condition of 750°C/300 MPa;
The anti-thermal fatigue performance is excellent, capable of withstanding severe temperature cycling conditions.
Antioxidation
The chromium element forms a protective oxide film, combined with the high-temperature stability of the nickel matrix, enabling the alloy to exhibit good corrosion resistance in high-temperature oxidation environments.

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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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