Plastic ABS (bulk/injection) vs. FDM PAHT-CF

Compare Plastic ABS (bulk/injection) vs. FDM PAHT-CF strength, stiffness, weight and thermal properties.

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Plastic ABS (bulk/injection)Bulk polymer (molded or machined)

Mechanical
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Yield strength	45MPasourcetypical, tensile stress at yield 23 °C	not given (tensile used)
Ultimate tensile strength	not sourced	92MPasourcetypical
Flexural strength	65MPasourcetypical, 23 °C	125MPasourcetypical
Elongation at break	10%sourcenominal strain at break, 23 °C	8.4%sourcetypical
Young's modulus (stiffness)	2.3GPasourcetypical	3.86GPasourcetypical1.68x stiffer
Density	1,040kg/m³sourcetypical	1,060kg/m³sourcetypical
Strength to weight	43.3kN·m/kg	86.8kN·m/kg2.01x higher
Stiffness to weight	2.21MN·m/kg	3.64MN·m/kg1.65x higher
Poisson's ratio	0.39sourcetypical, ABS family (Covestro Part and Mold Design guide, Table 3-1)	not sourced
Shear modulus	0.827GPa	not sourced
Bulk modulus	3.48GPa	not sourced
Speed of sound	1,487m/s	1,908m/s
Thermal
Thermal conductivity	0.17W/m·Ksourcetypical	not sourced
Thermal expansion	80–110µm/m·Ksourcerange	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	21.4W/m	not sourced
Melting point	not sourced	225°Csourcetypical
Glass transition	not sourced	70°Csourcetypical
Max service temperature	94°CsourceHDT 1.8 MPa (annealed 4 h/80 °C)	170°CsourceHDT 1.8 MPa
Values for	INEOS Styrolution Terluran GP-22 general-purpose injection-molding ABS, ISO typical values (TDS revision 08/01/2022)	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 ABS (bulk/injection) stronger than FDM PAHT-CF?

FDM PAHT-CF is stronger: its tensile strength is 92 MPa against yield strength 45 MPa for Plastic ABS (bulk/injection) (2.04x).

Which is lighter, Plastic ABS (bulk/injection) or FDM PAHT-CF?

Plastic ABS (bulk/injection) is lighter: 1,040 kg/m³ against 1,060 kg/m³ for FDM PAHT-CF.

Which is stiffer, Plastic ABS (bulk/injection) or FDM PAHT-CF?

FDM PAHT-CF is stiffer: Young's modulus 3.86 GPa against 2.3 GPa for Plastic ABS (bulk/injection), so the same part in FDM PAHT-CF deflects less under the same load.

Which is lighter for the same job, Plastic ABS (bulk/injection) 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 ABS (bulk/injection)	FDM PAHT-CF
Stiff rod or tie (tension)	1.65x heavier	lighter
Stiff beam (bending)	27% heavier	lighter
Stiff panel or plate	17% heavier	lighter
Strong rod or tie	2.01x heavier	lighter
Strong beam	1.58x heavier	lighter
Strong panel or plate	40% 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).

Among 59 materials

Stiffness against density

Strength against density