7050 T7451 Aluminum for Aircraft Fuselage Reinforcement Frame

7050 T7451 aluminum alloy is a high-strength aluminum alloy widely used in the aerospace field, particularly suitable for structural components such as reinforced frames, stringers, and bulkheads in aircraft fuselages.

After solution treatment and aging treatment, the T7451 condition of the 7050 aluminum alloy exhibits higher strength and toughness. The aging treatment helps improve the material's corrosion resistance and fatigue performance.

The 7050 T7451 aluminum alloy has good corrosion resistance, making it suitable for use in various environments, especially when aircraft operate in high humidity and high salinity conditions, effectively resisting corrosion.

The weldability of 7050 aluminum alloy is relatively poor, and welding is generally not recommended. If welding is necessary, specialized welding materials and processes must be used to ensure the strength of the welded joints.

The 7050 T7451 aluminum alloy thick plate, with its high strength, high toughness, and corrosion resistance, is an ideal material for structural components such as reinforced frames, stringers, and bulkheads in the aerospace field, ensuring the safety, stability, and efficiency of aircraft during flight.

Features of Aircraft Fuselage Reinforcement Frame Aluminum 7050

1. High Strength

The tensile strength and yield strength of 7050 aluminum alloy are very high, making it particularly suitable for bearing various loads during aircraft flight, ensuring the safety and stability of the fuselage structure.

2. High Toughness

The 7050 alloy has good toughness, able to resist impacts and deformation under extreme conditions, reducing the risk of cracking in high-stress environments.

3. Corrosion Resistance

The 7050 T7451 alloy undergoes specific heat treatment, resulting in a protective film on the surface that enhances its corrosion resistance, making it suitable for various climate conditions and environments, thus ensuring greater durability in aerospace applications.

Performance of 7050 Aluminum in Aircraft Fuselage Reinforcement Frame

• 1. Good Machinability: The 7050 aluminum alloy exhibits excellent cutting and forming performance during processing, facilitating the manufacture of complex-shaped fuselage structural components.
• 2. Heat Treatment Enhancement: The T7451 condition indicates that the alloy has undergone specific heat treatment processes, further improving its strength and toughness, allowing it to maintain good mechanical properties in both high and low-temperature environments.
• 3. Lightweight Design: Due to the high strength of 7050 aluminum alloy, it is possible to reduce material usage while maintaining structural strength, achieving lightweight goals that contribute to improved fuel efficiency of the aircraft.

Applications of 7050 Aluminum in Aircraft

1. Reinforcement Frame of Aircraft Fuselage

• Function: The reinforcement frame is a key structural component of the aircraft fuselage, primarily used to ensure the stability and safety of the fuselage.
• Load-Bearing Capacity: The 7050-T7451 aluminum alloy can withstand external loads (such as aerodynamic loads and gravity) and internal pressures (such as airtight requirements), thus maintaining the shape and structural integrity of the fuselage.
• High Strength and Toughness: The high tensile strength and good toughness of this aluminum alloy ensure that the reinforcement frame remains stable even under extreme conditions, preventing structural failure.

2. Fuselage Stringers

• Main Load-Bearing Structure: Stringers serve as the main load-bearing structure of the fuselage, responsible for distributing and transmitting loads, ensuring the overall stiffness and strength of the fuselage.
• Design Requirements: When designing stringers, the high strength characteristics of 7050-T7451 aluminum alloy can effectively reduce structural weight, thereby improving the aircraft's fuel efficiency and load capacity.
• Fatigue Resistance: Stringers must withstand repeated vibrations and loads, and the excellent fatigue resistance of the 7050 alloy ensures reliability during long-term use.

3. Fuselage Bulkheads

• Spatial Separation: Bulkheads are used to separate the internal space of the fuselage, forming different compartments such as the passenger cabin, cargo hold, and equipment bay.
• Structural Strength: The high strength of 7050-T7451 aluminum alloy contributes to increasing the structural strength of the bulkheads, ensuring they do not deform under pressure and loads.
• Sealing Performance: Bulkheads require good sealing to maintain cabin pressure and temperature. The 7050 aluminum alloy can achieve precise joints after processing, enhancing sealing performance.

4. Other High-Strength and High-Fatigue Load Structural Components

• Wide Application: The 7050-T7451 aluminum alloy is not limited to the components mentioned above; it can also be used for other structural parts that bear high strength and high fatigue loads, such as fittings, brackets, and other frame structures.
• Machinability: The good machinability of this aluminum alloy allows it to be manufactured into complex shapes through milling, turning, and stamping processes to meet the design requirements of aircraft.

Chemical Composition of 7050 Aluminum

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