Introduction to 7075 Aluminum Sheet

Chemical Composition

Mechanical Properties

• High Strength: The 7075 aluminum sheet has a very high strength. Its tensile strength is usually above 500MPa, and the yield strength can reach around 400MPa, which is much higher than that of common aluminum alloy materials. It can even be comparable to some low - alloy steels, enabling it to withstand large external forces and loads, making it suitable for applications with high strength requirements.
• Good Toughness: It has good toughness and can withstand impact loads without being prone to brittle fracture. It can withstand a certain degree of deformation without breaking, which makes it perform well in some applications that may be subject to dynamic loads or impacts.
• High Fatigue Strength: Under repeated stress, the 7075 aluminum sheet has a high fatigue strength. It can withstand multiple cyclic loads without developing fatigue cracks, thus extending its service life.

Physical Properties

• Density: The density is approximately 2.81g/cm?, similar to other aluminum alloys. It is relatively light among metal materials, which is very beneficial for application scenarios that require weight reduction, such as aerospace and automotive manufacturing. It can reduce the overall weight while ensuring structural strength, improving energy efficiency and operating performance.
• Thermal Conductivity: The thermal conductivity is about 130 - 150W/(m·K), which has good heat - conducting properties. It can quickly conduct heat, helping to dissipate heat in some equipment or components that need heat dissipation in a timely manner, avoiding overheating and ensuring the normal operation of the equipment.
• Electrical Conductivity: It has relatively high electrical conductivity and good electrical properties, which can also play a certain role in some occasions with requirements for electrical performance.

Processing Properties

• Good Machinability: It can be processed through various processes such as rolling, extrusion, forging, and machining, and can be made into products of various shapes and sizes, such as sheets, pipes, bars, and profiles, to meet the needs of different application fields.
• Heat Treatment Performance: It is very sensitive to heat treatment. Through appropriate heat treatment processes such as solution treatment and aging treatment, its mechanical properties can be significantly improved, enabling it to reach the optimal state of use.
• Surface Treatment Performance: It is easy to be surface - treated, such as anodizing, electrophoretic coating, powder coating, etc. These surface treatment processes can effectively improve the corrosion resistance and decorativeness of the 7075 aluminum sheet, extend its service life, and give it a better appearance.

Application Fields

• Aerospace Field: Due to its high strength and low weight, it is widely used in key components of aircraft such as wings, fuselage structures, and landing gears. It helps to reduce the weight of the aircraft, improve fuel efficiency, and increase the range and payload.
• Automotive Manufacturing Field: It can be used to manufacture engine parts, chassis parts, body frames, etc. of automobiles. It can reduce the body weight while ensuring the safety of the vehicle, improving the acceleration performance, fuel economy, and handling performance of the car.
• Military Field: It is often used to manufacture parts of weapons and equipment, such as missile casings and weapon brackets. Its high strength and good corrosion resistance can meet the use requirements of military equipment in harsh environments.
• High - end Sports Equipment Field: It is also widely used in high - end sports equipment such as bicycles, golf clubs, and tennis rackets. Using its high strength and good toughness can improve the performance and user experience of the equipment.
• Other Fields: It can also be applied in fields such as mold manufacturing, electronic equipment, and architectural decoration, such as manufacturing large - scale molds, casings of electronic devices, and building curtain walls.