Aluminum 2124-T351
Subcategory: 2000 Series Aluminum Alloy; Aluminum Alloy; Metal; Nonferrous Metal
Close Analogs:
Composition Notes:
A Zr + Ti limit of 0.20 percent maximum may be used with this alloy designation for extruded and forged products only, but only when the supplier or producer and the purchaser have mutually so agreed. Agreement may be indicated, for example, by reference to a standard, by letter, by order note, or other means which allow the Zr + Ti limit.
Aluminum content reported is calculated as remainder.
Composition information provided by the Aluminum Association and is not for design.
Key Words: Aluminium 2124-T351; UNS A92124; QQ-A-250/29; ASTM B209; AMS 4101; AA2124-T351
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Material Notes:
Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.
Physical Properties
| Physical Properties | Metric | English | Comments |
| Density | 2.78 g/cc | 0.1 lb/in³ | AA; Typical |
Mechanical Properties
| Hardness, Brinell | 120 | 120 | 500 kg load with 10 mm ball |
| Hardness, Knoop | 150 | 150 | Converted from Brinell Hardness Value |
| Hardness, Rockwell A | 47 | 47 | Converted from Brinell Hardness Value |
| Hardness, Rockwell B | 75 | 75 | Converted from Brinell Hardness Value |
| Hardness, Vickers | 137 | 137 | Converted from Brinell Hardness Value |
| Tensile Strength, Ultimate | 470 MPa | 68200 psi | |
| Tensile Strength, Yield | 325 MPa | 47100 psi | |
| Elongation at Break | 20 % | 20 % | In 5 cm; Sample 1.6 mm thick |
| Modulus of Elasticity | 73 GPa | 10600 ksi | Average of Tension and Compression. In Aluminum alloys, the compressive modulus is typically 2% greater than the tensile modulus |
| Poisson’s Ratio | 0.33 | 0.33 | Estimated from trends in similar Al alloys. |
| Fatigue Strength | 140 MPa | 20300 psi | 500,000,000 Cycles |
| Shear Modulus | 27 GPa | 3920 ksi | Estimated from similar Al alloys. |
| Shear Strength | 285 MPa | 41300 psi |
Electrical Properties
| Electrical Resistivity | 4.4e-006 ohm-cm | 4.4e-006 ohm-cm |
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 | 150 W/m-K | 1040 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 |
Processing Properties
| Annealing Temperature | 413 °C | 775 °F | |
| Solution Temperature | 493 °C | 920 °F | |
| Aging Temperature | 191 °C | 375 °F |