Materials / Compare
Titanium Ti-6Al-4V vs. Zinc Zamak 3
Compare Titanium Ti-6Al-4V vs. Zinc Zamak 3 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 | 885MPasourcetypical, plate (>0.187 in), annealed, 0.2% offset | 221MPasourcetypical |
| Ultimate tensile strength | 940MPasourcetypical, plate, annealed | 283MPasourcetypical |
| Elongation at break | 16%sourcetypical, in 2 in., plate annealed | 10%sourcetypical, in 2 in. |
| Young's modulus (stiffness) | 107–122GPasourcetypical range, 20 °C | 85.5GPasourcetypical |
| Density | 4,430kg/m³sourcenominal | 6,600kg/m³sourcetypical |
| Strength to weight | 200kN·m/kg5.97x higher | 33.5kN·m/kg |
| Stiffness to weight | 25.8MN·m/kg2x higher | 13MN·m/kg |
| Poisson's ratio | 0.342sourcemean of TIMET measurements | 0.27sourcetypical, Zamak 3 hot-chamber die cast |
| Shear modulus | 42.7GPa27% stiffer in shear | 33.7GPa |
| Bulk modulus | 121GPa | 62GPa |
| Speed of sound | 5,084m/s | 3,599m/s |
| Thermal | ||
| Thermal conductivity | 6.6W/m·Ksourcetypical, 20 °C, mill annealed | 113W/m·Ksourcetypical |
| Thermal expansion | 9µm/m·Ksourcetypical, mean 0-100 °C | 27.4µm/m·Ksourcetypical |
| 100 mm part over a 50 °C swing | 45µm growth3.04x less | 137µm growth |
| Specific heat | 580J/kg·Ksourcetypical, 20 °C | 419J/kg·Ksourcetypical |
| Heats up and cools (diffusivity) | 2.57mm²/s | 40.9mm²/s15.9x faster |
| Thermal shock resistance | 3,730W/m | 7,782W/m2.09x more resistant |
| Melting point | 1,630–1,650°Csourcemelting range | 381–387°Csourcemelting range |
| Max service temperature | 400°Csourceupper recommended use temperature | not sourced |
| Values for | TIMETAL 6-4 (Ti-6Al-4V Grade 5) annealed plate typical (TIMET properties manual) + TIMET datasheet TMC-0150 physical properties | Zamak 3 (ASTM B86 die cast), Nathan Trotter (zinc alloy producer) technical data sheet, typical values |
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 Titanium Ti-6Al-4V stronger than Zinc Zamak 3?
Titanium Ti-6Al-4V is stronger: its yield strength is 885 MPa against 221 MPa for Zinc Zamak 3 (4x).
Which is lighter, Titanium Ti-6Al-4V or Zinc Zamak 3?
Titanium Ti-6Al-4V is lighter: 4,430 kg/m³ against 6,600 kg/m³ for Zinc Zamak 3.
Which is stiffer, Titanium Ti-6Al-4V or Zinc Zamak 3?
Titanium Ti-6Al-4V is stiffer: Young's modulus 115 GPa against 85.5 GPa for Zinc Zamak 3, so the same part in Titanium Ti-6Al-4V deflects less under the same load.
Which is lighter for the same job, Titanium Ti-6Al-4V or Zinc Zamak 3?
For the same stiffness or strength: Titanium Ti-6Al-4V is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Titanium Ti-6Al-4V | Zinc Zamak 3 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 2x heavier |
| Stiff beam (bending) | lighter | 1.72x heavier |
| Stiff panel or plate | lighter | 1.64x heavier |
| Strong rod or tie | lighter | 5.97x heavier |
| Strong beam | lighter | 3.76x heavier |
| Strong panel or plate | lighter | 2.98x heavier |
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, Titanium Ti-6Al-4V or Zinc Zamak 3?
Zinc Zamak 3 conducts heat better: 113 W/m·K against 6.6 W/m·K for Titanium Ti-6Al-4V.
Which expands less with temperature?
Titanium Ti-6Al-4V expands less: 9 µm/m·K against 27.4 µm/m·K for Zinc Zamak 3.