2011 T4511 Aluminum
2011-T4511 aluminum alloy is a high-strength aluminum alloy enhanced by the T4511 heat treatment state, widely used in aerospace, precision machinery, and other fields, particularly suitable for components that require high-precision machining and complex shapes.
2011-T4511 aluminum alloy is a specific state of 2011 aluminum alloy, processed using the T4511 heat treatment process. To achieve the T4511 state, the aluminum alloy is first subjected to solution heat treatment, followed by stress relief, and finally, natural aging treatment.
2011-T4511 Aluminum Information Table
| Characteristics | Description |
| Alloy Composition | 2011 aluminum alloy belongs to the aluminum-copper-molybdenum series, with main components including aluminum, copper (4.5%-5.5%), manganese, silicon, molybdenum, and other elements. |
| T4511 Heat Treatment State | After solution heat treatment, stress relief, and natural aging, the alloy’s strength and hardness are enhanced. |
| Physical Properties | Density is approximately 2.78 g/cm³, melting point is around 660°C, with high thermal conductivity, which helps improve heat dissipation performance. |
| Mechanical Properties | Tensile strength ranges from 290-400 MPa, high yield strength, high hardness, with good formability, suitable for precision machining. |
| Machinability | Excellent machinability, suitable for precision machining, thread cutting, and manufacturing complex-shaped components, as well as precision casting and electronic component enclosures. |
| Corrosion Resistance | Poor corrosion resistance, especially susceptible to corrosion in humid and seawater environments, usually requiring surface treatment. |
| Applications | Widely used in aerospace, precision machinery, and electronic devices, particularly suitable for components with complex shapes and high-precision machining. |
| Pros and Cons Summary | Advantages include good machinability and high strength, while disadvantages include poor corrosion resistance. It is suitable for applications that require high-precision machining and complex shapes. |
T4511 Heat Treatment Process
- Solution Heat Treatment: The alloy is heated to a specific temperature, typically around 500°C, to dissolve the elements in the alloy and form a solid solution.
- Stress Relief: Stress generated during the manufacturing process is relieved through appropriate heating or cooling procedures to reduce material deformation.
- Natural Aging: After solution heat treatment, the aluminum alloy undergoes natural aging at room temperature, promoting the hardening process and increasing strength and hardness without artificial heating.
2011 T4511 Aluminum Mechanical Properties
| Property | 2011-T4511 Aluminum |
| Elastic (Young's, Tensile) Modulus, GPa | 71 |
| Elongation at Break, % | 18 |
| Fatigue Strength, MPa | 110 |
| Poisson's Ratio | 0.33 |
| Shear Modulus, GPa | 27 |
| Shear Strength, MPa | 210 |
| Tensile Strength: Ultimate (UTS), MPa | 340 |
| Tensile Strength: Yield (Proof), MPa | 190 |
2011 T4511 Aluminum Thermal Properties
| Property | 2011-T4511 Aluminum |
| Latent Heat of Fusion, J/g | 390 |
| Maximum Temperature: Mechanical, °C | 190 |
| Melting Completion (Liquidus), °C | 640 |
| Melting Onset (Solidus), °C | 540 |
| Specific Heat Capacity, J/kg-K | 870 |
| Thermal Conductivity, W/m-K | 140 |
| Thermal Expansion, µm/m-K | 23 |
2011 T4511 Aluminum Electrical Properties
| Property | 2011-T4511 Aluminum |
| Electrical Conductivity: Equal Volume, % IACS | 35 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 100 |
2011 T4511 Aluminum Machinability
2011-T4511 aluminum alloy has excellent machinability, making it suitable for precision machining, especially for components that require precise thread cutting and complex shape processing. Due to its content of lead and tin, 2011 aluminum alloy has superior machinability compared to other high-strength aluminum alloys, and it is widely used in precision casting and electronic component enclosures.
2011 T4511 Aluminum Corrosion Resistance
2011-T4511 aluminum alloy has poor corrosion resistance, especially prone to corrosion in humid and seawater environments. Therefore, additional surface treatments such as anodizing or coating are typically required to enhance its corrosion resistance.
2011 T4511 Aluminum Applications
2011 T4511 aluminum alloy is widely used in aerospace, precision machinery, and electronic devices, particularly suitable for manufacturing components with complex shapes and requiring high-precision machining. For example, precision casting, thread manufacturing, and electronic component enclosures frequently use 2011-T4511 aluminum alloy. Additionally, due to its superior machinability, 2011-T4511 aluminum is also applied in some high-precision engineering fields.
- Aerospace: 2011-T4511 aluminum alloy is widely used in the aerospace industry, particularly in the manufacturing of components that require complex shapes and high-precision machining, such as aerospace structural components and fuselage assemblies. Its high strength and excellent machinability enable it to meet the strict requirements of the aerospace industry for precision and performance.
- Precision Machinery: 2011-T4511 aluminum alloy is extensively used in precision machinery manufacturing, particularly suitable for manufacturing complex-shaped precision mechanical components such as gears, bearings, and couplings. Its excellent machinability makes it perform well in precision machining and processing complex parts.
- Electronic Devices: 2011-T4511 aluminum alloy is commonly used in the manufacture of enclosures for electronic devices, especially for enclosures that require high precision and complex shapes, such as those for mobile phones, laptops, and other electronic components. Its high hardness and good machinability make it an ideal material for electronic device enclosures.
- Precision Casting: 2011-T4511 aluminum alloy is widely used in precision casting, particularly suitable for manufacturing high-precision cast components. Its excellent flowability and high hardness give it a significant advantage in producing complex and small castings, especially in castings requiring high dimensional accuracy.
2011 T4511 Aluminum Pros and Cons
2011 T4511 Aluminum Pros
Excellent machinability and processing performance, suitable for precision machining.
High strength and hardness, able to withstand large loads.
Suitable for applications requiring high precision, such as aerospace and precision equipment.
2011 T4511 Aluminum Cons
Poor corrosion resistance, requiring surface treatment.
Relatively high cost, especially when high strength is required.