Materials / Compare
Aluminum 2024-T351 vs. DMLS Ti-6Al-4V ELI Titanium
Compare Aluminum 2024-T351 vs. DMLS Ti-6Al-4V ELI Titanium 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 | 324MPasourcetypical, 0.2% offset, .500 in dia specimen | 1,100MPasourcetypical, as built, average of horizontal + vertical (M400) |
| Ultimate tensile strength | 469MPasourcetypical | 1,270MPasourcetypical, as built, average of horizontal + vertical (M400) |
| Elongation at break | 19%sourcetypical, in 4D | 8.7%sourcetypical at break, as built (M400) |
| Young's modulus (stiffness) | 73.1GPasourcetypical | 110GPasourcesame maker and process, sibling grade: EOS Titanium Ti64 (Grade 5) on EOS M 290, as built, XY and Z, typical |
| Density | 2,770kg/m³sourcenominal | 4,400kg/m³sourcetypical part density (ISO 3369), M400 |
| Strength to weight | 117kN·m/kg | 250kN·m/kg2.14x higher |
| Stiffness to weight | 26.4MN·m/kg6% higher | 25MN·m/kg |
| Poisson's ratio | 0.33sourcetypical (handbook physical constant), all tempers | 0.342sourcewrought TIMETAL 6-4 (TIMET measurement, mean of 10); composition-level, not DMLS-measured |
| Shear modulus | 27.5GPa | 41GPa49% stiffer in shear |
| Bulk modulus | 71.7GPa | 116GPa |
| Speed of sound | 5,137m/s | 5,000m/s |
| Thermal | ||
| Thermal conductivity | 120W/m·Ksourcetypical, 20 °C | 6.6W/m·Ksourcebase material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °C |
| Thermal expansion | 22.9µm/m·Ksourcetypical, mean 20-100 °C | 9µm/m·Ksourcemean 25-100 °C, ASTM E228; EOS Ti64 Grade 23 (=ELI) on EOS M 290 40 µm; condition not stated (sheet's mechanical data are heat treated) |
| 100 mm part over a 50 °C swing | 115µm growth | 45µm growth2.54x less |
| Specific heat | 875J/kg·Ksourcetypical, at 100 °C | 580J/kg·Ksourcebase material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °C |
| Heats up and cools (diffusivity) | 49.5mm²/s19.1x faster | 2.59mm²/s |
| Thermal shock resistance | 15,561W/m3.22x more resistant | 4,825W/m |
| Melting point | 502–638°Csourcemelting range | 1,630–1,650°Csourcemelting range, wrought TIMETAL 6-4 (composition-level) |
| Values for | 2024-T4/T351, Kaiser Aluminum sheet, coil & plate typical datasheet; Poisson from MIL-HDBK-5J | EOS Titanium Ti64ELI (powder 9011-0040; ASTM F136/F3001, i.e. Grade 23) on EOS M400 SF, parameter set Ti64ELI_030_FlexM400_100, 30 µm, as built; ISO 6892-1 A14 |
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.
DMLS Ti-6Al-4V ELI Titanium is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is Aluminum 2024-T351 stronger than DMLS Ti-6Al-4V ELI Titanium?
DMLS Ti-6Al-4V ELI Titanium is stronger: its yield strength is 1,100 MPa against 324 MPa for Aluminum 2024-T351 (3.4x).
Which is lighter, Aluminum 2024-T351 or DMLS Ti-6Al-4V ELI Titanium?
Aluminum 2024-T351 is lighter: 2,770 kg/m³ against 4,400 kg/m³ for DMLS Ti-6Al-4V ELI Titanium.
Which is stiffer, Aluminum 2024-T351 or DMLS Ti-6Al-4V ELI Titanium?
DMLS Ti-6Al-4V ELI Titanium is stiffer: Young's modulus 110 GPa against 73.1 GPa for Aluminum 2024-T351, so the same part in DMLS Ti-6Al-4V ELI Titanium deflects less under the same load.
Which is lighter for the same job, Aluminum 2024-T351 or DMLS Ti-6Al-4V ELI Titanium?
For the same stiffness or strength: Aluminum 2024-T351 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate; DMLS Ti-6Al-4V ELI Titanium is lighter for a strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Aluminum 2024-T351 | DMLS Ti-6Al-4V ELI Titanium |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 6% heavier |
| Stiff beam (bending) | lighter | 29% heavier |
| Stiff panel or plate | lighter | 39% heavier |
| Strong rod or tie | 2.14x heavier | lighter |
| Strong beam | 42% heavier | lighter |
| Strong panel or plate | 16% 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 2024-T351 or DMLS Ti-6Al-4V ELI Titanium?
Aluminum 2024-T351 conducts heat better: 120 W/m·K against 6.6 W/m·K for DMLS Ti-6Al-4V ELI Titanium.
Which expands less with temperature?
DMLS Ti-6Al-4V ELI Titanium expands less: 9 µm/m·K against 22.9 µm/m·K for Aluminum 2024-T351.
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