Materials / Compare
Glass vs. DMLS Ti-6Al-4V ELI Titanium
Compare Glass vs. DMLS Ti-6Al-4V ELI Titanium strength, stiffness, weight and thermal properties.
| Try it on a partA sample part to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | not given (tensile used) | 1,100MPasourcetypical, as built, average of horizontal + vertical (M400) |
| Ultimate tensile strength | 41MPasourcetypical mean surface tensile stress at fracture (MOR), 60 s load, weathered, 50% breakage probability | 1,270MPasourcetypical, as built, average of horizontal + vertical (M400) |
| Flexural strength | 41MPasourcemean MOR (same value as tensile) | not sourced |
| Elongation at break | not sourced | 8.7%sourcetypical at break, as built (M400) |
| Young's modulus (stiffness) | 72GPasourcetypical | 110GPasourcesame maker and process, sibling grade: EOS Titanium Ti64 (Grade 5) on EOS M 290, as built, XY and Z, typical |
| Density | 2,500kg/m³sourcetypical | 4,400kg/m³sourcetypical part density (ISO 3369), M400 |
| Strength to weight | 16.4kN·m/kg | 250kN·m/kg15.2x higher |
| Stiffness to weight | 28.8MN·m/kg15% higher | 25MN·m/kg |
| Poisson's ratio | 0.22sourcetypical | 0.342sourcewrought TIMETAL 6-4 (TIMET measurement, mean of 10); composition-level, not DMLS-measured |
| Shear modulus | 29.5GPa | 41GPa39% stiffer in shear |
| Bulk modulus | 42.9GPa | 116GPa |
| Speed of sound | 5,367m/s | 5,000m/s |
| Thermal | ||
| Thermal conductivity | 0.937W/m·Ksourcetypical at 75 F | 6.6W/m·Ksourcebase material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °C |
| Thermal expansion | 8.3µm/m·Ksourcetypical, 75-575 F | 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 | 41.5µm growth8% less | 45µm growth |
| Specific heat | 880J/kg·Ksourcetypical at 75 F | 580J/kg·Ksourcebase material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °C |
| Heats up and cools (diffusivity) | 0.426mm²/s | 2.59mm²/s6.07x faster |
| Thermal shock resistance | 50.1W/m | 4,825W/m96.2x more resistant |
| Melting point | not sourced | 1,630–1,650°Csourcemelting range, wrought TIMETAL 6-4 (composition-level) |
| Max service temperature | 511°Csourcestrain point (ASTM C336) - stress-relaxation onset, not a rated service limit | not sourced |
| Values for | Annealed soda-lime-silica float glass, Pilkington North America Technical Bulletin ATS-129 (04/2025) | 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 Glass stronger than DMLS Ti-6Al-4V ELI Titanium?
DMLS Ti-6Al-4V ELI Titanium is stronger: its yield strength is 1,100 MPa against tensile strength 41 MPa for Glass (26.8x).
Which is lighter, Glass or DMLS Ti-6Al-4V ELI Titanium?
Glass is lighter: 2,500 kg/m³ against 4,400 kg/m³ for DMLS Ti-6Al-4V ELI Titanium.
Which is stiffer, Glass or DMLS Ti-6Al-4V ELI Titanium?
DMLS Ti-6Al-4V ELI Titanium is stiffer: Young's modulus 110 GPa against 72 GPa for Glass, so the same part in DMLS Ti-6Al-4V ELI Titanium deflects less under the same load.
Which is lighter for the same job, Glass or DMLS Ti-6Al-4V ELI Titanium?
For the same stiffness or strength: Glass 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 | Glass | DMLS Ti-6Al-4V ELI Titanium |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 15% heavier |
| Stiff beam (bending) | lighter | 42% heavier |
| Stiff panel or plate | lighter | 1.53x heavier |
| Strong rod or tie | 15.2x heavier | lighter |
| Strong beam | 5.09x heavier | lighter |
| Strong panel or plate | 2.94x 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, Glass or DMLS Ti-6Al-4V ELI Titanium?
DMLS Ti-6Al-4V ELI Titanium conducts heat better: 6.6 W/m·K against 0.937 W/m·K for Glass.
Which expands less with temperature?
Glass expands less: 8.3 µm/m·K against 9 µm/m·K for DMLS Ti-6Al-4V ELI Titanium.