2024 T851 Aluminum Plate Sheet
What is 2024 T851 Material?
2024-T851 aluminum alloy is a heat-treated state of 2024 aluminum alloy. To achieve the T851 condition, 2024 aluminum alloy undergoes a three-step process: solution heat treatment, stress relief, and artificial aging.
2024-T851 aluminum alloy offers high strength, excellent fatigue resistance, and machinability. It is widely used in aerospace, military, and high-strength structural applications.
2024 T851 Aluminum Designations
Aluminium 2024-T851; AA2024-T851; UNS A92024; Al2024-T851
2024 T851 Aluminum Plate Characteristics
- High Strength: Compared to other aluminum alloys, 2024 aluminum alloy has outstanding tensile and yield strength, making it particularly suitable for structural components that bear high loads.
- Fatigue Resistance: The T851 state of aluminum undergoes stress relief and artificial aging, providing excellent fatigue resistance. It is suitable for applications subjected to repeated loading over extended periods.
- Good Machinability: Despite its high strength, 2024-T851 aluminum alloy retains good machinability and weldability, especially suited for milling, drilling, and other machining processes.
- Corrosion Resistance: While 2024 alloy has relatively poor corrosion resistance, appropriate surface treatments can significantly enhance its durability, meeting the requirements for aerospace applications.
2024 T851 Aluminum Supplied Forms
2024-T851 aluminum is processed into various forms to suit different applications, mainly for aerospace and high-performance structural components. It is available in a variety of shapes, from flat plates to round, hexagonal, and square bars, all retaining the key properties of high strength and fatigue resistance of the 2024 alloy.
| Product Name | Description |
| 2024-T81 ALCLAD SHEET | A coated aluminum sheet with a thin layer of corrosion-resistant aluminum on the surface, providing better corrosion resistance while retaining the high strength of the 2024 alloy. It is commonly used in aerospace applications where both strength and corrosion resistance are critical. |
| Aluminum Round Bar 2024 T851 Cold Finish | Cold-drawn round bars of 2024-T851 aluminum, featuring high strength and excellent fatigue resistance. The cold-working process improves surface finish and dimensional accuracy, making it suitable for precision machining in aerospace and structural applications. |
| 2024 T851 Rolled Plate | Rolled plates of 2024-T851 aluminum, typically used for large flat sections in high-strength structural components. The rolling process provides smooth surfaces and dimensional precision, ideal for applications requiring high strength and fatigue resistance. |
| Aluminium Alloy 2024 T851 Flat | Flat plates made from 2024-T851 aluminum alloy, suitable for applications requiring precision and strength in flat surfaces, and easy to machine. Commonly used in structural and aerospace components. |
| Aluminium Alloy 2024 T851 Hexagon | Hexagonal bars made from 2024-T851 aluminum alloy, used for parts requiring a hexagonal cross-section. This shape is commonly used in aerospace fittings or components that require specific geometries. |
| Aluminium Alloy 2024 T851 Round | Round bars made from 2024-T851 aluminum alloy, commonly used in machining processes. They offer excellent strength and fatigue resistance, suitable for components such as rods, shafts, and aerospace structural parts. |
| Aluminium Alloy 2024 T851 Square | Square bars made from 2024-T851 aluminum alloy, suitable for structural and aerospace components requiring a square profile. This shape is beneficial for parts that require precise dimensions and strength. |
2024 T851 Aluminum Material Data Sheet
| Physical Properties | Metric | English | Comments |
| Density | 2.78 g/cc | 0.1 lb/in³ | AA; Typical |
| 2024 T851 Aluminum Mechanical Properties | |||
| Hardness, Brinell | 128 | 128 | 500 kg load/10 mm ball |
| Hardness, Knoop | 161 | 161 | Estimated from Brinell |
| Hardness, Rockwell A | 49 | 49 | Estimated from Brinell |
| Hardness, Rockwell B | 79 | 79 | Estimated from Brinell |
| Hardness, Vickers | 146 | 146 | Estimated from Brinell |
| Tensile Strength, Ultimate | Min 455 MPa | Min 66000 psi | |
| Tensile Strength, Yield | Min 400 MPa | Min 58000 psi | |
| Elongation at Break | 5 % | 5 % | |
| Modulus of Elasticity | 72.4 GPa | 10500 ksi | Estimated from other heat treatments. |
| Poisson's Ratio | 0.33 | 0.33 | Estimated from other heat treatments. |
| Fatigue Strength | 117 MPa | 17000 psi | 500,000,000 cycles; completely reversed; R. R. Moore Machine and specimen. |
| Machinability | 70 % | 70 % | 0-100 Scale (A=90; B=70; C=50; D=30; E=10) |
| Shear Modulus | 27 GPa | 3920 ksi | Estimated from similar Al alloys. |
| Shear Strength | 296 MPa | 42900 psi | |
| 2024 T851 Aluminum Electrical Properties | |||
| Electrical Resistivity | 4.5e-006 ohm-cm | 4.5e-006 ohm-cm | |
| 2024 T851 Aluminum Thermal Properties | |||
| CTE, linear 68°F | 23.2 µm/m-°C | 12.9 µin/in-°F | AA; Typical; Average over 68-212°F range. |
| CTE, linear 250°C | 24.7 µm/m-°C | 13.7 µin/in-°F | Average over the range 20-300ºC |
| Specific Heat Capacity | 0.875 J/g-°C | 0.209 BTU/lb-°F | |
| Thermal Conductivity | 151 W/m-K | 1050 BTU-in/hr-ft²-°F | |
| Melting Point | 502 - 638 °C | 935 - 1180 °F | AA; Typical range based on typical composition for wrought products 1/4 inch thickness or greater. Eutectic melting is not eliminated by homogenization. |
| Solidus | 502 °C | 935 °F | AA; Typical |
| Liquidus | 638 °C | 1180 °F | AA; Typical |
| 2024 T851 Aluminum Processing Properties | |||
| Annealing Temperature | 413 °C | 775 °F | |
| Solution Temperature | 256 °C | 493 °F | |
2024 T851 Aluminum Applications
- Aerospace: Due to its excellent strength and fatigue resistance, 2024-T851 aluminum alloy is commonly used in manufacturing primary aircraft structural components, such as wings, fuselage frames, support parts, etc.
- Military and High-Strength Structural Parts: 2024-T851 aluminum alloy is also used in military applications for high-strength structural components, such as naval vessels, missiles, and other equipment.
- Automotive and Heavy Machinery: The high strength of 2024-T851 aluminum alloy makes it suitable for automotive and heavy machinery components that require high strength and fatigue resistance.
