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 aluminum alloys.
2124 T851 aluminum plate is a high-performance product within the 2000 series, designed for applications that require high strength, excellent fatigue resistance, and superior heat resistance.
2124 T851 Aluminum Standards
- UNS A92124
- QQ-A-250/29
- ASTM B209
- AMS 4101
- AA2124-T851
Properties of Aluminum Alloy 2124-T851
High Strength
2124 T851 aluminum plate exhibits exceptional strength characteristics after heat treatment and artificial aging, especially in high-stress environments.
Excellent Fatigue Resistance
Its microstructure stability and high copper content make it suitable for structures subjected to repeated loading, with a long fatigue life.
Good Heat Resistance
The alloy maintains its strength even in high-temperature environments, making it suitable for parts that require thermal stability.
Lightweight
Despite its high strength, it retains the low-density characteristics of aluminum alloys, offering an ideal solution for reducing structural weight.
Workability
The material has good machinability, allowing for the manufacture of complex shapes and is suitable for various machining methods (such as milling and drilling).
Corrosion Resistance
Compared to some other 2000 series alloys, 2124-T851 has higher corrosion resistance, especially after surface treatment, further enhancing its resistance to corrosion.
2124 T851 Aluminum Plate Sheet Forms
2124 T851 Rolled Plate
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
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
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.
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 | |
Applications of 2124 T851 Aluminum Plate
2124 T851 aluminum plate is widely used in the aerospace industry, particularly in the manufacturing of aircraft structural components, wings, fuselages, and other load-bearing parts. Additionally, due to its high strength and lightweight characteristics, it is also used in the production of high-performance vehicles and military equipment.
1. Aerospace Industry
- Fuselage skins: Used in areas subject to high stress and fatigue cycles, such as primary aircraft structures.
- Wing spars and skins: Ideal for regions with strict requirements for strength and weight reduction.
- Spacecraft structures: Utilized in critical components exposed to high temperatures and significant impact forces.
2. Defense Industry
- Missile structures: Provides reliability for shells and support structures under high-temperature and high-pressure conditions.
- Armor plates: Excels in components requiring fatigue resistance and impact durability.
3. Automotive and Racing Industry
- Racing chassis: Offers the perfect combination of high rigidity and weight reduction, enhancing overall performance.
- Suspension components: Improves dynamic performance and durability.
4. Industrial Manufacturing
- Molds: Suitable for precision manufacturing equipment operating under high temperatures and pressures.
- Mechanical components: Performs excellently in applications like pressure vessels and support frames.
Processing of 2124 T851 Aluminum
- Solution heat treatment: 2124 aluminum alloy is heated to a high temperature to evenly distribute alloying elements and form a solid solution.
- Stress relieving: Metal is stretched to eliminate internal stresses. The amount of stretching depends on the specific type of 2124 aluminum, such as sheet, plate, bar, or forging.
- Artificial aging: Aging treatment is conducted at a specific temperature to enhance the strength and hardness of the alloy.
