FDM PAHT-CF vs. Plastic HDPE

Compare FDM PAHT-CF vs. Plastic HDPE strength, stiffness, weight and thermal properties.

Plastic HDPEBulk polymer (molded or machined)

Mechanical	FDM PAHT-CF	Plastic HDPE
Yield strength	not given (tensile used)	24MPa1
Ultimate tensile strength	92MPa2	not stated (yield given)
Flexural strength	125MPa2	not sourced
Elongation at break	8.4%2	not sourced
Young's modulus (stiffness)	3.86GPa24.29x stiffer	0.9GPa1
Density	1,060kg/m³2	950kg/m³112% lighter
Strength to weight	86.8kN·m/kg3.44x higher	25.3kN·m/kg
Stiffness to weight	3.64MN·m/kg3.84x higher	0.947MN·m/kg
Poisson's ratio	not sourced	base material0.4–0.453
Shear modulus	not sourced	0.316GPa
Bulk modulus	not sourced	2GPa
Speed of sound	1,908m/s1.96x faster	973m/s

Stiffness against densityHigher and further left: stiffer for its weight

Strength against densityHigher and further left: stronger for its weight

Thermal	FDM PAHT-CF	Plastic HDPE
Thermal conductivity	not sourced	base material0.4–0.49W/m·K3
Thermal expansion	not sourced	base material120µm/m·K3
100 mm part over a 50 °C swing	not sourced	600µm growth
Specific heat	not sourced	base material2,250J/kg·K3
Heats up and cools (diffusivity)	not sourced	0.208mm²/s
Thermal shock resistance	not sourced	56.9W/m
Melting point	225°C2	not sourced
Glass transition	70°C2	not sourced
Max service temperature	HDT 1.8 MPa170°C2	not sourced

Thermal conductivity against densityHigher and further left: spreads more heat for its weight

Thermal expansion against thermal conductivityLower and further right: warps less when heated

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Sources3 documents: LyondellBasell, Bambu Lab, INEOS Olefins & Polymers USA

FDM PAHT-CF: 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.
Plastic HDPE: LyondellBasell Hostalen 23050 B high density polyethylene, typical ISO values

1
Hostalen 23050 B Product DataLyondellBasellPlastic HDPE · Yield strength: typical, tensile stress at yield 23 °C, 50 mm/min ISO 527Plastic HDPE · Young's modulus (stiffness): typical, tensile modulus 23 °C ISO 527Plastic HDPE · Density: typical, ISO 1183
2
Bambu PAHT-CF Technical Data Sheet, V3.0Bambu LabFDM PAHT-CF · Ultimate tensile strength: typicalFDM PAHT-CF · Flexural strength: typicalFDM PAHT-CF · Elongation at break: typicalFDM PAHT-CF · Young's modulus (stiffness): typicalFDM PAHT-CF · Density: typicalFDM PAHT-CF · Melting point: typicalFDM PAHT-CF · Glass transition: typicalFDM PAHT-CF · Max service temperature: HDT 1.8 MPa
3
Typical Engineering Properties of High Density PolyethyleneINEOS Olefins & Polymers USAarchived copyPlastic HDPE · Poisson's ratio: base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)Plastic HDPE · Thermal conductivity: base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)Plastic HDPE · Thermal expansion: base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)Plastic HDPE · Specific heat: base material: high-density polyethylene family (INEOS Olefins & Polymers USA, Typical Engineering Properties of HDPE)

Each number points to the document that states it, with the exact basis. Values without a number are computed from the sourced ones. "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

Mechanical

Is FDM PAHT-CF stronger than Plastic HDPE?

FDM PAHT-CF is stronger: its tensile strength is 92 MPa against yield strength 24 MPa for Plastic HDPE (3.83x).

Which is lighter, FDM PAHT-CF or Plastic HDPE?

Plastic HDPE is lighter: 950 kg/m³ against 1,060 kg/m³ for FDM PAHT-CF.

Which is stiffer, FDM PAHT-CF or Plastic HDPE?

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, FDM PAHT-CF or Plastic HDPE?

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	FDM PAHT-CF	Plastic HDPE
Stiff rod or tie (tension)	lighter	3.84x heavier
Stiff beam (bending)	lighter	1.86x heavier
Stiff panel or plate	lighter	46% heavier
Strong rod or tie	lighter	3.44x heavier
Strong beam	lighter	2.2x heavier
Strong panel or plate	lighter	1.75x 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).