Materials / Compare
FDM ASA vs. Plastic TPU
Compare FDM ASA vs. Plastic TPU 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 | not given (tensile used) | not given (tensile used) |
| Ultimate tensile strength | 37MPasourcetypical | 23.7MPasourcetypical, stress at break |
| Flexural strength | 65MPasourcetypical15.9x stronger in bending | 4.1MPasourcetypical |
| Elongation at break | 9.2%sourcetypical | not sourced |
| Young's modulus (stiffness) | 2.45GPasourcetypical36.6x stiffer | 0.067GPasourcetypical |
| Density | 1,050kg/m³sourcetypical16% lighter | 1,220kg/m³sourcetypical |
| Strength to weight | 35.2kN·m/kg1.81x higher | 19.4kN·m/kg |
| Stiffness to weight | 2.33MN·m/kg42.5x higher | 0.0549MN·m/kg |
| Poisson's ratio | not sourced | not sourced |
| Shear modulus | not sourced | not sourced |
| Bulk modulus | not sourced | not sourced |
| Speed of sound | 1,528m/s | 234m/s |
| Thermal | ||
| Thermal conductivity | 0.17W/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, typical | not sourced |
| Thermal expansion | 80–110µm/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, range | not sourced |
| 100 mm part over a 50 °C swing | 475µm growth | not sourced |
| Specific heat | not sourced | not sourced |
| Heats up and cools (diffusivity) | not sourced | not sourced |
| Thermal shock resistance | not sourced | not sourced |
| Melting point | not sourced | 217°Csourcetypical |
| Max service temperature | 92°CsourceHDT 1.8 MPa | 50.3°CsourceHDT 0.455 MPa (printed specimens) |
| Values for | Bambu Lab ASA, TDS V3.0, printed specimens X-Y; nozzle 260 °C, bed 80 °C, 200 mm/s, 100% infill; annealed and dried 80 °C for 12 h before testing. | Ultimaker TPU 95A, 3D-printed specimens, XY (flat); Ultimaker S5 Pro, engineering intent profile, 0.15 mm layer height, AA 0.4 print core, 100% infill, Cura 4.9, printed one-at-a-time, conditioned >=24 h at room temperature. TDS (file v5.00), April 29, 2022. |
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.
FDM ASA and Plastic TPU are 3D printed: their properties depend on build direction and print settings; these are typical values.
Questions
Is FDM ASA stronger than Plastic TPU?
FDM ASA is stronger: its tensile strength is 37 MPa against 23.7 MPa for Plastic TPU (1.56x).
Which is lighter, FDM ASA or Plastic TPU?
FDM ASA is lighter: 1,050 kg/m³ against 1,220 kg/m³ for Plastic TPU.
Which is stiffer, FDM ASA or Plastic TPU?
FDM ASA is stiffer: Young's modulus 2.45 GPa against 0.067 GPa for Plastic TPU, so the same part in FDM ASA deflects less under the same load.
Which is lighter for the same job, FDM ASA or Plastic TPU?
For the same stiffness or strength: FDM ASA 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 | FDM ASA | Plastic TPU |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 42.5x heavier |
| Stiff beam (bending) | lighter | 7.03x heavier |
| Stiff panel or plate | lighter | 3.86x heavier |
| Strong rod or tie | lighter | 1.81x heavier |
| Strong beam | lighter | 1.56x heavier |
| Strong panel or plate | lighter | 45% 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).