7A09 Aerospace Aluminum Forging
7A09 aerospace aluminum forgings are a type of forged product based on 7A09 aluminum alloy. 7A09 aluminum alloy belongs to the aluminum-zinc-magnesium-copper alloy series and is a high-strength aluminum alloy widely used in the aerospace sector.
7A09 aluminum alloy is a high-strength aluminum alloy that belongs to the aluminum-zinc-magnesium alloy series, commonly used in the aerospace field. Its main characteristics include excellent strength-to-weight ratio, good corrosion resistance, and weldability.
7A09 aluminum alloy is typically subjected to aging treatment to enhance its strength, with common heat treatment processes including T6 (solution treatment followed by aging) and T7451 (a special aging treatment that improves corrosion resistance and mechanical properties).
7A09 aluminum alloy exhibits excellent mechanical properties, making it suitable for applications requiring high strength. After heat treatment, its strength and toughness are significantly improved.
7A09 Aerospace Aluminum Forging Features
- 1. Strength: 7A09 has extremely high tensile and yield strength, making it suitable for structural components that need to withstand high loads.
- 2. Toughness: Although it has high strength, its toughness and ductility are also ensured, making it suitable for the machining of complex-shaped forgings.
- 3. Corrosion Resistance: With appropriate surface treatments, its corrosion resistance can be enhanced, making it suitable for use in harsh environments.
Chemical composition of 7A09 aluminum alloy
| Element | Composition range(%) |
| (Al) | Reminder |
| (Zn) | 2.4%-2.8% |
| (Mg) | 1.8%-2.4% |
| (Cu) | 1.2%-1.8% |
| (Cr) | 0.08%-0.15% |
| (Mn) | 0.06%-0.15% |
| (Ti) | 0.05%-0.15% |
| (Si) | 0.15%-0.40% |
| (V) | 0.04%-0.12% |
| (Fe) | ＜0.30% |
| (Sn) | ＜0.10% |
| (Zr) | ＜0.10% |
| Other | ＜0.05% |
Property of 7A09 aluminum
| Physical properties | Value |
| Density | 2.79 g/cm3 |
| Melting point | 570°C |
| Yield strength | ＜680 MPa |
| Tensile strength | 780 MPa |
| Elongation | ＜10% |
| Hardness | 160 HB |
| Coefficient of thermal expansion | 23.8×10-6/°C(20°C) |
| Thermal conductivity | 121 W/(m·K)(20°C) |
| Conductivity | 27.6 MS/m(20°C) |
7A09 Aerospace Aluminum Forging Applications
7A09 aluminum forgings are widely used in the aerospace field due to their high strength and good corrosion resistance. They are primarily used to manufacture aircraft structural components, such as fuselage frames, landing gear components, and other load-bearing parts, capable of withstanding extreme flight conditions. Their superior mechanical properties ensure excellent performance in high-pressure and high-temperature environments, guaranteeing the safety and reliability of the aircraft.
1. Aircraft Structural Components
- Fuselage Frame: 7A09 aluminum forgings can be used for the main structural frame of the aircraft fuselage, which requires high strength and lightweight design to ensure safety and stability during flight.
- Wings: The wings are one of the most important parts of the aircraft, and 7A09 aluminum forgings are used in the support structure and ribs of the wings, able to withstand various forces and pressures during flight.
2. Landing Gear
Landing Gear Components: The landing gear is a component that endures significant impact forces during takeoff and landing. Due to its high strength and good toughness, 7A09 aluminum forgings are commonly used in the support structure and other critical parts of the landing gear, ensuring reliability under various conditions.
3. Engine Components
- Engine Mounts: In the design of aircraft engines, 7A09 aluminum forgings can be used to manufacture engine mounts and other load-bearing components, capable of withstanding stress in high-temperature and high-pressure environments.
- Turbine Blades: In some cases, 7A09 aluminum alloy can be used as a material for turbine blades. Although high-temperature alloys are more common, the lightweight characteristics of aluminum alloy can also be advantageous in specific applications.
4. Navigation and Control Systems
- Control Surface Frames: 7A09 aluminum forgings can be used to manufacture control surface frames and control system components of the aircraft, ensuring good maneuverability and stability during flight.
- Actuation Components: In various control systems of the aircraft, 7A09 aluminum forgings can be used for push rods and other moving parts, providing the necessary strength and stiffness.
Forged 7A09 Aluminum Alloy Processing Forms
- Forgings: 7A09 aluminum alloy can be processed into various shapes through hot or cold forging, suitable for making aerospace structural components, such as wings, fuselage frames, and landing gear parts.
- Plates and Profiles: In certain applications, 7A09 can also be made into plates and profiles for manufacturing high-strength aerospace components.
