Materials / Compare
Aluminum vs. Aluminum 2024-T351
Compare Aluminum vs. Aluminum 2024-T351 strength, stiffness, weight and thermal properties.
| Try it on a partA bracket to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | 276MPasourcetypical, 0.2% offset, .500 in dia specimen | 324MPasourcetypical, 0.2% offset, .500 in dia specimen17% stronger |
| Ultimate tensile strength | 310MPasourcetypical | 469MPasourcetypical1.51x stronger |
| Elongation at break | 17%sourcetypical, in 4D, 0.500 in dia specimen | 19%sourcetypical, in 4D |
| Young's modulus (stiffness) | 68.3GPasourcetypical | 73.1GPasourcetypical |
| Density | 2,700kg/m³sourcenominal | 2,770kg/m³sourcenominal |
| Strength to weight | 102kN·m/kg | 117kN·m/kg14% higher |
| Stiffness to weight | 25.3MN·m/kg | 26.4MN·m/kg4% higher |
| Poisson's ratio | 0.33sourcetypical (handbook physical constant) | 0.33sourcetypical (handbook physical constant), all tempers |
| Shear modulus | 25.7GPa | 27.5GPa7% stiffer in shear |
| Bulk modulus | 67GPa | 71.7GPa |
| Speed of sound | 5,030m/s | 5,137m/s |
| Thermal | ||
| Thermal conductivity | 167W/m·Ksourcetypical, 20 °C39% more heat through a fin | 120W/m·Ksourcetypical, 20 °C |
| Thermal expansion | 23.6µm/m·Ksourcetypical, mean 20-100 °C | 22.9µm/m·Ksourcetypical, mean 20-100 °C |
| 100 mm part over a 50 °C swing | 118µm growth | 115µm growth3% less |
| Specific heat | 896J/kg·Ksourcetypical, at 100 °C | 875J/kg·Ksourcetypical, at 100 °C |
| Heats up and cools (diffusivity) | 69mm²/s39% faster | 49.5mm²/s |
| Thermal shock resistance | 19,159W/m23% more resistant | 15,561W/m |
| Melting point | 582–652°Csourcesolidus-liquidus | 502–638°Csourcemelting range |
| Values for | 6061-T6/T651, Kaiser Aluminum typical properties (sheet, coil & plate datasheet); Poisson from MIL-HDBK-5J | 2024-T4/T351, Kaiser Aluminum sheet, coil & plate typical datasheet; Poisson from MIL-HDBK-5J |
Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
Questions
Is Aluminum stronger than Aluminum 2024-T351?
Aluminum 2024-T351 is stronger: its yield strength is 324 MPa against 276 MPa for Aluminum (17%).
Which is lighter, Aluminum or Aluminum 2024-T351?
Aluminum is lighter: 2,700 kg/m³ against 2,770 kg/m³ for Aluminum 2024-T351.
Which is stiffer, Aluminum or Aluminum 2024-T351?
Aluminum 2024-T351 is stiffer: Young's modulus 73.1 GPa against 68.3 GPa for Aluminum, so the same part in Aluminum 2024-T351 deflects less under the same load.
Which is lighter for the same job, Aluminum or Aluminum 2024-T351?
For the same stiffness or strength: Aluminum 2024-T351 is lighter for a stiff rod or tie (tension), strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Aluminum | Aluminum 2024-T351 |
|---|---|---|
| Stiff rod or tie (tension) | 4% heavier | lighter |
| Stiff beam (bending) | about equal | about equal |
| Stiff panel or plate | about equal | about equal |
| Strong rod or tie | 14% heavier | lighter |
| Strong beam | 8% heavier | lighter |
| Strong panel or plate | 6% heavier | lighter |
For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).
Which conducts heat better, Aluminum or Aluminum 2024-T351?
Aluminum conducts heat better: 167 W/m·K against 120 W/m·K for Aluminum 2024-T351.
Which expands less with temperature?
Aluminum 2024-T351 expands less: 22.9 µm/m·K against 23.6 µm/m·K for Aluminum.