2124 T851 Aluminum Plate Sheet
2124 T851 aluminum plate is a high-strength aluminum alloy primarily composed of aluminum and copper, belonging to the 2000 series of aluminum alloys.
2124 T851 aluminum plate is a high-performance product in the 2000 series, specifically designed for applications requiring high strength, excellent fatigue resistance, and superior heat resistance.
- The purity of 2124 aluminum alloy is higher than that of 2024, with reduced iron and silicon impurities, which improves fracture toughness and fatigue resistance.
- T8: Solution heat treatment, cold working (usually through stretching to relieve stress), followed by artificial aging.
- 51: Indicates stress relief by stretching (1-3% permanent deformation) after solution treatment to improve dimensional stability, especially in thicker plates.
2124 T851 aluminum alloy is a high-strength material mainly used in aerospace applications. It is a heat-treatable alloy with excellent mechanical properties, suitable for manufacturing structural components with strict requirements.
2124 T851 aluminum plate is a high-performance material optimized for aerospace and military applications where strength, fatigue resistance, and fracture toughness are critical. Its T851 temper ensures stability in thick sections, but it requires corrosion protection and meticulous manufacturing processes.
2124 T851 Aluminum Plate Specifications
| Specification Item | Detailed Description |
| Thickness | 10mm to 150mm, custom sizes available |
| Width | 1000mm to 3500mm |
| Length | 5000mm to 12000mm |
| Surface Treatment | Mill Finish |
| Temper | T851 (Solution heat treated, stress relieved by stretching, and aged) |
| Standards and Specifications | AMS 4204 (Aerospace Material Specification) |
| ASTM B209 (Aluminum Alloy Plates/Sheets Standard) |
Haomei Aluminum provides a variety of aluminum aircraft plate products to meet various aerospace application requirements. Our products include several standards such as AMS 4041, AMS 4037, AMS 4035, AMS 4049, AMS 4050, AMS 4048, AMS 4045, AMS 4044, AMS 4027, AMS 4026, AMS 4025, AMS 4347, and AMS 4202. In addition, we offer high-performance aluminum alloys such as 2219, 2124, 7175, 7475, 2024, 7075 T73, and 7075 T76 to meet the needs of aerospace and aviation industry customers.
2124-T851 Aluminum Alloy Characteristics
- High Strength: 2124-T851 aluminum plate exhibits outstanding strength characteristics after heat treatment and artificial aging, especially in high-stress environments, making it suitable for structural components that require high strength.
- Excellent Fatigue Resistance: 2124-T851 aluminum plate has excellent fatigue resistance, particularly suitable for structures subjected to cyclic loads, offering a longer fatigue life in repeated loading environments.
- Fracture Toughness: 2124-T851 aluminum plate demonstrates excellent fracture toughness due to controlled impurity levels, making it suitable for components in high-impact load environments.
- Corrosion Resistance: 2124-T851 aluminum plate has lower corrosion resistance compared to 6000/7000 series, usually requiring coatings (such as anodizing or aluminum cladding) or the use of corrosion inhibitors to enhance its corrosion resistance.
- Stress Corrosion Cracking (SCC) Resistance: Through T851 temper treatment, the SCC resistance of 2124-T851 aluminum plate is significantly improved, making it suitable for applications that require resistance to SCC.
- Good Heat Resistance: 2124-T851 aluminum plate maintains its strength even in high-temperature environments, making it suitable for components that require thermal stability, such as structural parts in high-temperature working conditions.
- Lightweight: Despite its high strength characteristics, 2124-T851 aluminum plate retains the low-density advantage of aluminum alloys, making it an ideal material for reducing structural weight.
- Machinability: 2124-T851 aluminum plate has good machinability and can be processed into complex shapes through various machining methods (such as milling and drilling), suitable for a variety of precision machining needs.
2124 T851 Aluminum Plate Forms
| Product Type | Image | Description |
| 2124 T851 Rolled Plate |
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2124 T851 Rolled Plate is a high-strength aluminum-copper alloy plate, processed through the T851 heat treatment, offering excellent mechanical properties and fatigue performance. Its machinability is good, widely used in aerospace structural components that require high strength and fatigue resistance. |
| Aluminum Sheet 2124-T851 |
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Aluminum Sheet 2124-T851 is a high-quality aluminum alloy sheet, suitable for thin-sheet applications. It is characterized by light weight, high strength, and good machinability, commonly used in aircraft skins and other aerospace components. |
| Aluminum Alloy 2124-T851 Thick Plate |
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Aluminum Alloy 2124-T851 Thick Plate is a product designed for high-load-bearing applications, with excellent strength, fatigue resistance, and good dimensional stability. It is widely used in aerospace structures and heavy-duty mechanical components. |
2124 T851 Aluminum Plate Heat Treatment Process
The T851 temper indicates that the alloy has undergone solution heat treatment, stretching to release stress, followed by precipitation heat treatment to enhance strength. This process improves mechanical properties and is suitable for high-stress applications.
- Solution Heat Treatment: 2124 aluminum alloy is heated to a high temperature to ensure uniform distribution of alloying elements and form a solid solution.
- Stress Relieving: The metal is stretched to relieve internal stresses. The amount of stretching depends on the specific form of 2124 aluminum, such as plate, rod, or forging.
- Artificial Aging: The alloy undergoes aging treatment at specific temperatures to increase its strength and hardness.
Comparison of 2124 T851 Aluminum Plate and 2024
Due to stricter impurity control, 2124 offers better toughness and fatigue performance.
Compared to 2024-T3/T4, T851 temper enhances stress corrosion cracking resistance.
Advantages of 2124 T851 Aluminum
2124 T851 aluminum plate achieves a perfect balance between mechanical strength, durability, and process adaptability, especially in aerospace, defense, and high-performance industrial applications, meeting the demanding requirements for high strength and low weight.
- High Strength: The high strength of 2124 aluminum alloy makes it widely used in aerospace, military, and automotive sectors where high demands are placed.
- Good Machinability: It exhibits good performance during forging and machining, suitable for producing complex-shaped components.
- Superior Fatigue Resistance: It performs excellently in applications subjected to cyclic loads.
2124 T851 Aluminum Alloy Composition
The main alloying element in 2124 aluminum alloy is copper, typically in the range of 3.8% to 4.9%, with small amounts of manganese, magnesium, silicon, iron, zinc, and titanium. The composition design of this alloy provides excellent performance in terms of strength and corrosion resistance.
| Element | Composition(%) |
| Si | 0.2 |
| Fe | 0.3 |
| Cu | 3.8-4.9 |
| Mn | 0.3-0.9 |
| Mg | 1.2-1.8 |
| Cr | 0.10 |
| Zn | 0.25 |
| Ti | 0.15 |
| Other | 0.2 |
| Al | Remainder |
2124 T851 Aluminum Material Property Data Sheet
| Physical Properties | Metric | English | Comments |
| Density | 2.78 g/cc | 0.1 lb/in³ | AA; Typical |
| 2124 T851 Aluminum Mechanical Properties | |||
| Hardness, Brinell | 128 | 128 | 500 kg load with 10 mm ball |
| Hardness, Knoop | 161 | 161 | Converted from Brinell Hardness Value |
| Hardness, Rockwell A | 48.9 | 48.9 | Converted from Brinell Hardness Value |
| Hardness, Rockwell B | 79 | 79 | Converted from Brinell Hardness Value |
| Hardness, Vickers | 146 | 146 | Converted from Brinell Hardness Value |
| Ultimate Tensile Strength | 483 MPa | 70000 psi | AA; Typical |
| Tensile Yield Strength | 441 MPa | 64000 psi | AA; Typical |
| Elongation at Break | 8 % | 8 % | AA; Typical; 1/2 in. (12.7 mm) Diameter |
| Modulus of Elasticity | 73.1 GPa | 10600 ksi | AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus. |
| Poisson's Ratio | 0.33 | 0.33 | Estimated from trends in similar Al alloys. |
| Fatigue Strength | 125 MPa | 18100 psi | 500,000,000 Cycles |
| Fracture Toughness | 26 MPa-m½ | 23.7 ksi-in½ | K(IC) in S-L Direction |
| Fracture Toughness | 26 MPa-m½ | 23.7 ksi-in½ | K(IC) in T-L Direction |
| Fracture Toughness | 32 MPa-m½ | 29.1 ksi-in½ | K(IC) in L-T Direction |
| Machinability | 70 % | 70 % | 0-100 Scale of Aluminum Alloys |
| Shear Modulus | 27 GPa | 3920 ksi | Estimated from similar Al alloys. |
| Shear Strength | 295 MPa | 42800 psi | |
| 2124 T851 Aluminum Electrical Properties | |||
| Electrical Resistivity | 4.49e-006 ohm-cm | 4.49e-006 ohm-cm | AA; Typical at 68°F |
| 2124 T851 Aluminum Thermal Properties | |||
| CTE, linear 68°F | 22.9 µm/m-°C | 12.7 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 | 0.882 J/g-°C | 0.211 BTU/lb-°F | |
| Thermal Conductivity | 151 W/m-K | 1050 BTU-in/hr-ft²-°F | AA; Typical at 77°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 |
| 2124 T851 Aluminum Processing Properties | |||
| Annealing Temperature | 413 °C | 775 °F | |
| Solution Temperature | 493 °C | 920 °F | |
| Aging Temperature | 191 °C | 375 °F | |
2124 T851 Aluminum Plate Applications
| Application | Description |
| Aircraft Structure | 2124-T851 aluminum plate is widely used in aircraft structural components, especially in areas requiring high strength and light weight. With its outstanding strength and fatigue resistance, this aluminum alloy plate can withstand high-stress loads encountered during flight. It is used in the construction of aircraft fuselage frames and other structural components, ensuring the aircraft's structural stability and safety. |
| Aerospace Components | 2124-T851 aluminum plate is widely used in various aerospace components, such as rocket shells, spacecraft outer casings, and onboard systems. Its high-temperature resistance, excellent fatigue resistance, and fracture toughness make it perform well in high-pressure, high-temperature, and high-cyclic load environments. This material is ideal for aerospace components subjected to extreme conditions. |
| High Strength-to-Weight Ratio Structural Components | Due to the excellent strength-to-weight ratio of 2124-T851 aluminum plate, it is used in structural components that require lightweight but high strength. These components are especially important in aerospace, particularly in aircraft structural design, where high performance is required while minimizing weight without compromising strength. Examples include aircraft door frames, reinforcements, and supports. |
| Aerospace: Fuselage Skin, Wing Structure, Bulkheads | 2124-T851 aluminum plate is widely used in the fuselage skin, wing structure, and bulkheads of aircraft. Fuselage skin requires materials with high fatigue resistance and strength, and 2124-T851 aluminum plate perfectly meets this need. Wing structures need to withstand continuous aerodynamic loads and temperature changes during flight, and the excellent heat resistance and fracture toughness of 2124-T851 aluminum plate make it an ideal choice. Similarly, bulkheads, as part of the aircraft's internal and external structure, require high strength and fatigue resistance, which 2124-T851 aluminum plate can provide for stable and reliable performance. |
2124 T851 Aluminum Plate Manufacturing Considerations
- Machining: Good machinability, but sharp chips may be produced; proper tools should be used.
- Welding: Poor weldability by traditional methods; mechanical fastening (riveting) or adhesives are preferable.
- Formability: Limited due to high strength; best suited for pre-formed components.
2124 T851 Aluminum Plate Storage and Handling
- Store under dry conditions to prevent corrosion.
- Avoid prolonged exposure to harsh environments without protective coatings.
