| 1.The Description of the 7075 Aluminum Sheet |
The 7075 aluminum sheet is a very strong grade of metal. It is well-known for its toughness, which is why it’s frequently used in aerospace and aviation applications. It has excellent weight-to-strength ration, making it ideal for highly stressed parts. When in the annealed condition, forming can be performed, which should be followed by heat treatment. 7075 aluminum is considered to be strong for aluminum. While forming this alloy, it has greater springback. If forming this metal while in the annealed condition becomes difficult, it can be placed in heat between 200 and 250 degrees F to soften it. To make this alloy have high-strength capabilities, heat treating can be used. It also has excellent properties when in low temperatures. The conductivity to electricity of this metal is 36 percent of copper.
| 2.The Feature of the 7075 Aluminum Sheet |
The strength measurements of this metal are as follows: 83,000 psi tensile strength, 48,000 psi shear strength and 73,000 psi shear strength. Due to this metal’s excellent ratio for weight-to-strength, it can be used in applications involving structural parts that are highly stressed. High stress applications that frequently use this grade of aluminum include aircraft fittings, missile parts, regulating valve parts, meter gears, fuse parts, worm gears and keys. It’s a popular choice for use in applications in commercial aircraft components and aerospace and defense equipment. The plastics industry also uses this alloy as a mold material.
The weldability of this metal is low, but the formability is great. When forging is used, it’s required that the alloy be placed in temperatures between 700 and 900 degrees F. Afterwards, solution heat treatment should be used.
| 3.The Application of the 7075 Aluminum Sheet |
It is used to manufacture aircraft structure and other high stress structural parts with high strength and strong corrosion resistance, such as upper and lower wing panels, purlins, partitions, etc. After solution treatment, the plasticity is good, the heat treatment strengthening effect is particularly good, and the strength below 150 ℃ is high, and the strength at low temperature is particularly good, the welding performance is poor, and there is a tendency of stress corrosion cracking. The two-stage aging can improve the SCC resistance.