Materials / Compare
Plastic HDPE vs. FDM PAHT-CF
Compare Plastic HDPE vs. FDM PAHT-CF 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 | 24MPasourcetypical, tensile stress at yield 23 °C, 50 mm/min ISO 527 | not given (tensile used) |
| Ultimate tensile strength | not sourced | 92MPasourcetypical |
| Flexural strength | not sourced | 125MPasourcetypical |
| Elongation at break | not sourced | 8.4%sourcetypical |
| Young's modulus (stiffness) | 0.9GPasourcetypical, tensile modulus 23 °C ISO 527 | 3.86GPasourcetypical |
| Density | 950kg/m³sourcetypical, ISO 1183 | 1,060kg/m³sourcetypical |
| Strength to weight | 25.3kN·m/kg | 86.8kN·m/kg3.44x higher |
| Stiffness to weight | 0.947MN·m/kg | 3.64MN·m/kg3.84x higher |
| Poisson's ratio | 0.4–0.45sourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) | not sourced |
| Shear modulus | 0.316GPa | not sourced |
| Bulk modulus | 2GPa | not sourced |
| Speed of sound | 973m/s | 1,908m/s |
| Thermal | ||
| Thermal conductivity | 0.4–0.49W/m·Ksourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) | not sourced |
| Thermal expansion | 120µm/m·Ksourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) | not sourced |
| 100 mm part over a 50 °C swing | 600µm growth | not sourced |
| Specific heat | 2,250J/kg·Ksourcebase material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE) | not sourced |
| Heats up and cools (diffusivity) | 0.208mm²/s | not sourced |
| Thermal shock resistance | 56.9W/m | not sourced |
| Melting point | not sourced | 225°Csourcetypical |
| Glass transition | not sourced | 70°Csourcetypical |
| Max service temperature | not sourced | 170°CsourceHDT 1.8 MPa |
| Values for | LyondellBasell Hostalen 23050 B high density polyethylene, typical ISO values | Bambu Lab PAHT-CF, TDS V3.0, printed specimens X-Y, dry state; nozzle 290 °C, bed 100 °C, 100 mm/s, 100% infill; annealed and dried 80 °C for 12 h before testing. |
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 PAHT-CF is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is Plastic HDPE stronger than FDM PAHT-CF?
FDM PAHT-CF is stronger: its tensile strength is 92 MPa against yield strength 24 MPa for Plastic HDPE (3.83x).
Which is lighter, Plastic HDPE or FDM PAHT-CF?
Plastic HDPE is lighter: 950 kg/m³ against 1,060 kg/m³ for FDM PAHT-CF.
Which is stiffer, Plastic HDPE or FDM PAHT-CF?
FDM PAHT-CF is stiffer: Young's modulus 3.86 GPa against 0.9 GPa for Plastic HDPE, so the same part in FDM PAHT-CF deflects less under the same load.
Which is lighter for the same job, Plastic HDPE or FDM PAHT-CF?
For the same stiffness or strength: FDM PAHT-CF 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 | Plastic HDPE | FDM PAHT-CF |
|---|---|---|
| Stiff rod or tie (tension) | 3.84x heavier | lighter |
| Stiff beam (bending) | 1.86x heavier | lighter |
| Stiff panel or plate | 46% heavier | lighter |
| Strong rod or tie | 3.44x heavier | lighter |
| Strong beam | 2.2x heavier | lighter |
| Strong panel or plate | 1.75x 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).