Jiangyin Chengxin Alloy Material Co., Ltd ，
Jiangsu Xiangcheng Supply Chain Management Co. LTD
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Jet Engine Components GH2903/GH903/N09903/Incoloy903 High Temperature Alloy Nut With Top Performance
The GH2903 (GH903/N09903/Incoloy 903) high-temperature alloy nut is a specialized fastener made from a nickel-iron-cobalt-based superalloy. It is designed for applications requiring high strength, excellent oxidation resistance, and thermal stability in temperatures up to 650°C (1202°F). This alloy offers exceptional resistance to stress relaxation and thermal expansion, making it ideal for aerospace, gas turbines, and high-performance engineering applications.
GH2903 nuts exhibit good corrosion resistance in harsh environments and retain their mechanical properties under cyclic thermal stresses. The alloy is precipitation-hardened for enhanced strength and creep resistance, ensuring long-term performance in demanding conditions. These properties make it a preferred choice for jet engines, power plants, and critical fastening solutions where reliability under extreme heat and mechanical loads is crucial. Common standards and specifications for GH2903 nuts include AMS 5991, ASTM B637, and GB/T 14992. These ensure consistent quality and performance across industries requiring high-temperature fastening solutions.
| Chemical Composition Wt.% | % | Fe | Nb | P | Co | Ni | Al | Ti | C | Mn | Si | S | Mo | B | Al |
| Min | 2.7 | 14 | 36 | 1.35 | 5 | 0.005 | 0.7 | ||||||||
| Max | Bal. | 3.5 | 0.015 | 17 | 39 | 0.5 | 1.75 | 0.05 | 0.2 | 0.2 | 0.015 | 6.5 | 0.01 | 1.15 |
| Physical Constants | Density(g/cm³) | 8.1 | |||||
| Melting Range(℃) | 1350–1400°C (2462–2552°F) | ||||||
GH2903/GH903/N09903/Incoloy903 Alloy Nut Key Features:
GH2903 (also known as GH903, N09903, or Incoloy 903) is a high-temperature alloy known for its excellent mechanical and thermal properties. Here are the key features of nuts made from this alloy:
Excellent creep and stress-rupture resistance at temperatures up to 650°C (1200°F).
Good resistance to oxidation and corrosion in high-temperature environments.
Superior fatigue strength, making it suitable for dynamic and cyclic loading applications.
Maintains mechanical properties under thermal cycling conditions.
Strengthened through aging treatment, which enhances its mechanical performance.
Reduces the risk of thermal distortion and ensures dimensional stability.
Can be readily machined and fabricated while maintaining strength.
GH2903 (also known as GH903, N09903, or Incoloy 903) is a high-temperature, high-strength nickel-iron-cobalt alloy known for its excellent mechanical properties and oxidation resistance at elevated temperatures. This makes it ideal for manufacturing nuts and fasteners used in demanding applications.
Used in jet engines, turbine discs, and exhaust components due to high strength and creep resistance at elevated temperatures.
Fasteners for aircraft structural components subjected to extreme thermal cycling.
Applied in land-based and marine gas turbines for securing high-temperature parts.
Used in combustion chamber assemblies and turbine casings.
Utilized in nuclear and thermal power plants for securing heat-resistant components.
Employed in steam and gas turbine systems operating under high-stress conditions.
Used in performance and racing vehicles for high-temperature exhaust systems and turbochargers.
Suitable for securing engine components exposed to extreme heat and stress.
Fasteners for high-pressure, high-temperature (HPHT) drilling equipment.
Used in refinery and petrochemical plants for securing heat exchangers and reactors.
Performs well in both high-temperature and cryogenic environments, making it suitable for aerospace cryogenic storage systems.
Used in securing components of industrial furnaces and heat treatment chambers.
The combination of high-temperature strength, oxidation resistance, and low thermal expansion makes GH2903 alloy nuts essential in extreme environments where standard materials would fail.
