Materials / Compare
FDM ASA vs. Plastic HDPE
Compare FDM ASA vs. Plastic HDPE 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) | 24MPasourcetypical, tensile stress at yield 23 °C, 50 mm/min ISO 527 |
| Ultimate tensile strength | 37MPasourcetypical | not sourced |
| Flexural strength | 65MPasourcetypical | not sourced |
| Elongation at break | 9.2%sourcetypical | not sourced |
| Young's modulus (stiffness) | 2.45GPasourcetypical | 0.9GPasourcetypical, tensile modulus 23 °C ISO 527 |
| Density | 1,050kg/m³sourcetypical | 950kg/m³sourcetypical, ISO 1183 |
| Strength to weight | 35.2kN·m/kg39% higher | 25.3kN·m/kg |
| Stiffness to weight | 2.33MN·m/kg2.46x higher | 0.947MN·m/kg |
| Poisson's ratio | not sourced | 0.4–0.45sourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) |
| Shear modulus | not sourced | 0.316GPa |
| Bulk modulus | not sourced | 2GPa |
| Speed of sound | 1,528m/s | 973m/s |
| Thermal | ||
| Thermal conductivity | 0.17W/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, typical | 0.4–0.49W/m·Ksourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) |
| Thermal expansion | 80–110µm/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, range | 120µm/m·Ksourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) |
| 100 mm part over a 50 °C swing | 475µm growth26% less | 600µm growth |
| Specific heat | not sourced | 2,250J/kg·Ksourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) |
| Heats up and cools (diffusivity) | not sourced | 0.208mm²/s |
| Thermal shock resistance | not sourced | 56.9W/m |
| Max service temperature | 92°CsourceHDT 1.8 MPa | not sourced |
| 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. | LyondellBasell Hostalen 23050 B high density polyethylene, typical ISO 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.
FDM ASA is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is FDM ASA stronger than Plastic HDPE?
FDM ASA is stronger: its tensile strength is 37 MPa against yield strength 24 MPa for Plastic HDPE (1.54x).
Which is lighter, FDM ASA or Plastic HDPE?
Plastic HDPE is lighter: 950 kg/m³ against 1,050 kg/m³ for FDM ASA.
Which is stiffer, FDM ASA or Plastic HDPE?
FDM ASA is stiffer: Young's modulus 2.45 GPa against 0.9 GPa for Plastic HDPE, so the same part in FDM ASA deflects less under the same load.
Which is lighter for the same job, FDM ASA or Plastic HDPE?
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 HDPE |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 2.46x heavier |
| Stiff beam (bending) | lighter | 49% heavier |
| Stiff panel or plate | lighter | 26% heavier |
| Strong rod or tie | lighter | 39% heavier |
| Strong beam | lighter | 21% heavier |
| Strong panel or plate | lighter | 12% 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, FDM ASA or Plastic HDPE?
Plastic HDPE conducts heat better: 0.445 W/m·K against 0.17 W/m·K for FDM ASA.
Which expands less with temperature?
FDM ASA expands less: 95 µm/m·K against 120 µm/m·K for Plastic HDPE.