7050 T7452 Aluminum
7050-T7452 aluminum alloy is a high-strength, excellent stress corrosion cracking resistance, exfoliation corrosion resistance, and fracture toughness aerospace material, widely used in aircraft structural components.
7050-T7452 aluminum alloy is a high-strength aerospace-grade aluminum alloy, particularly suitable for aircraft structural components that require a balance of strength, corrosion resistance, and fracture toughness. Its uniqueness lies in the special heat treatment process, including solution heat treatment, stress relief, and artificial aging stabilization.
7050 T7452 Aluminum Manufacturing and Heat Treatment Process
- Solution Heat Treatment: First, the 7050 aluminum alloy is heated to the solution temperature to fully dissolve its alloying elements. This step eliminates any segregation in the alloy and provides a good foundation for subsequent treatments.
- Stress Relief: After the solution treatment, the 7050 alloy undergoes a stress relief process, typically by compressing the alloy by 1-5%. This helps to reduce the internal residual stress, preventing deformation in the subsequent processing steps.
- Artificial Aging: The aluminum alloy is subjected to aging treatment (precise control of temperature and time) to enhance its mechanical properties, especially tensile strength, stress corrosion resistance, and exfoliation corrosion resistance. This process ensures the material achieves a proper mechanical balance, delivering optimal performance in practical applications.
7050 T7452 Aluminum Mechanical Properties
- Strength and Ductility: 7050-T7452 aluminum alloy has relatively lower strength compared to other variants of 7050 aluminum (such as T7451), which results in slightly lower ductility. However, it still retains excellent strength and durability, making it suitable for high-strength aerospace components.
- Stress Corrosion Cracking (SCC) Resistance: 7050-T7452 exhibits very high resistance to stress corrosion cracking, effectively resisting crack propagation under high-stress environments, particularly suitable for use in aerospace and other extreme conditions.
- Exfoliation Corrosion Resistance: Compared to other aluminum alloys, 7050-T7452 shows superior exfoliation corrosion resistance. This makes it highly suitable for applications exposed to high humidity and corrosive environments, such as aircraft structural components.
- Fracture Toughness: 7050-T7452 also has high fracture toughness, meaning it can maintain good crack resistance even under extreme conditions, ensuring safety.
7050 T7452 Aluminum Applications
7050-T7452 aluminum alloy is widely used in the aerospace industry, particularly in structural components that require a balance of high strength, high corrosion resistance, and toughness.
- Aircraft Structural Components: Such as wings, fuselage, and landing gear components. These parts must withstand very high stress while also resisting corrosion factors in the environment. The corrosion resistance and strength of 7050-T7452 make it an ideal material.
- High-Load Components: Due to its high strength and fatigue resistance, 7050-T7452 aluminum alloy is commonly used in aerospace components that require long-term use and endure high loads.
7050 T7452 Aluminum Performance Balance
7050-T7452 aluminum alloy provides an effective balance between strength, corrosion resistance, toughness, and fatigue resistance. Although its strength is slightly lower than other 7050 aluminum alloy variants, its superior stress corrosion cracking resistance, exfoliation corrosion resistance, and fracture toughness make it excel in many high-demand applications.
7050 T7452 Aluminum Related Standards
- AA7050-T7451: Similar in performance to 7050-T7452, but with slight differences in mechanical properties.
- AA7070-T73651: Another alloy related to 7050 aluminum, although its performance is similar to 7050 aluminum, certain properties (such as corrosion resistance) may differ.
- UNS A97050: The unified number for this alloy, used to identify the 7050 series aluminum alloy.
7050 T7452 Aluminum Mechanical Properties
Property | 7050-T7452 Aluminum |
Elastic (Young's, Tensile) Modulus (GPa) | 70 |
Elongation at Break (%) | 2.2 |
Fatigue Strength (MPa) | 130 |
Poisson's Ratio | 0.32 |
Shear Modulus (GPa) | 26 |
Shear Strength (MPa) | 280 |
Tensile Strength: Ultimate (UTS, MPa) | 490 |
Tensile Strength: Yield (Proof, MPa) | 390 |
Chemical Composition of 7050 Aluminum
Element | Mass Fraction % |
Aluminum | 86.4-90.0 |
Zinc | 6.0-7.0 |
Magnesium | 2.1-2.9 |
Copper | 1.4-2.0 |
Manganese | ≤0.10 |
Chromium | ≤0.04 |
Titanium | ≤0.06 |
Germanium | ≤0.06 |
Strontium | ≤0.03 |
Any other single impurity | ≤0.05 |
Total impurities | ≤0.15 |
7050-T7452 aluminum alloy is an ideal high-strength, high-corrosion-resistant, and excellent fracture-toughness aerospace material. It is particularly suitable for high-load, corrosion-resistant aerospace and aviation structural components. Although its strength and ductility are slightly lower than other 7050 aluminum variants, its outstanding overall performance makes it indispensable in aircraft structures and high-load components.