LY12 alloy aluminum plate is used in aircraft structure rivets

LY12 alloy, also known as 2024 aluminum alloy, is a high-strength, heat-treatable alloy primarily used in aircraft structures. It is commonly utilized in the production of rivets, as well as other critical structural components that require high strength-to-weight ratios and excellent fatigue resistance. Here’s a detailed description of LY12 alloy aluminum plate and its applications in aircraft rivets:
Composition:
LY12 aluminum alloy contains a significant proportion of copper (around 4.4–5.0%), which is the main alloying element, followed by smaller amounts of magnesium, manganese, and silicon. The composition typically includes:
Copper (Cu): 4.4–5.0%
Manganese (Mn): 1.2–1.8%
Magnesium (Mg): 1.2–1.8%
Silicon (Si): 0.5%
Iron (Fe): 0.5% max
Zinc (Zn): 0.25% max
Aluminum (Al): Balance
This alloy is known for its excellent mechanical properties, making it ideal for aerospace and other high-performance applications.
Properties:
High Strength: LY12 alloy exhibits high tensile strength, particularly when heat-treated. This allows it to bear significant loads and resist deformation under stress.
Fatigue Resistance: It has a good fatigue resistance, which is crucial for aerospace components that are subjected to repetitive loading cycles.
Corrosion Resistance: While LY12 has better resistance to corrosion compared to other alloys, it is still susceptible to stress corrosion cracking. In aerospace applications, coatings or anodizing processes are used to enhance corrosion resistance.
Workability: This alloy is readily forgeable and has good machinability, which allows for easy production of complex parts, including rivets and other fasteners.