Plastic ABS (bulk/injection) vs. Plastic PPS GF40

Compare Plastic ABS (bulk/injection) vs. Plastic PPS GF40 strength, stiffness, weight and thermal properties.

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

Plastic PPS GF40Bulk 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	195MPasourcetensile strength, 5 mm/min
Flexural strength	65MPasourcetypical, 23 °C	285MPasourceflexural strength at break
Elongation at break	10%sourcenominal strain at break, 23 °C	1.9%sourcestrain at break, 5 mm/min
Young's modulus (stiffness)	2.3GPasourcetypical	14.7GPasourcetypical, 1 mm/min
Density	1,040kg/m³sourcetypical1.59x lighter	1,650kg/m³sourcetypical
Strength to weight	43.3kN·m/kg	118kN·m/kg2.73x higher
Stiffness to weight	2.21MN·m/kg	8.91MN·m/kg4.03x higher
Poisson's ratio	0.39sourcetypical, ABS family (Covestro Part and Mold Design guide, Table 3-1)	0.35sourceglass-reinforced Fortron PPS (class value, not grade-specific)
Shear modulus	0.827GPa	5.44GPa6.58x stiffer in shear
Bulk modulus	3.48GPa	16.3GPa
Speed of sound	1,487m/s	2,985m/s
Thermal
Thermal conductivity	0.17W/m·Ksourcetypical	0.2W/m·Ksource40% glass-reinforced Fortron, 25 °C (not grade-specific)
Thermal expansion	80–110µm/m·Ksourcerange	12µm/m·Ksourceparallel (flow), mean -50 to 90 °C
100 mm part over a 50 °C swing	475µm growth	60µm growth7.92x less
Specific heat	not sourced	not sourced
Heats up and cools (diffusivity)	not sourced	not sourced
Thermal shock resistance	21.4W/m	144W/m6.73x more resistant
Melting point	not sourced	280°CsourceDSC, 10 °C/min
Glass transition	not sourced	90°CsourceDSC, 10 °C/min
Max service temperature	94°CsourceHDT 1.8 MPa (annealed 4 h/80 °C)	270°CsourceHDT 1.8 MPa
Values for	INEOS Styrolution Terluran GP-22 general-purpose injection-molding ABS, ISO typical values (TDS revision 08/01/2022)	Celanese Fortron 1140L4 (PPS, 40% glass fibre), injection moulding; FORTRON PPS Short-Term Properties Guide (PPS-012, 2016); thermal conductivity and Poisson for 40% glass-reinforced Fortron from the Fortron PPS Design Manual (PPS-050, 2013).

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.

Questions

Is Plastic ABS (bulk/injection) stronger than Plastic PPS GF40?

Plastic PPS GF40 is stronger: its tensile strength is 195 MPa against yield strength 45 MPa for Plastic ABS (bulk/injection) (4.33x).

Which is lighter, Plastic ABS (bulk/injection) or Plastic PPS GF40?

Plastic ABS (bulk/injection) is lighter: 1,040 kg/m³ against 1,650 kg/m³ for Plastic PPS GF40.

Which is stiffer, Plastic ABS (bulk/injection) or Plastic PPS GF40?

Plastic PPS GF40 is stiffer: Young's modulus 14.7 GPa against 2.3 GPa for Plastic ABS (bulk/injection), so the same part in Plastic PPS GF40 deflects less under the same load.

Which is lighter for the same job, Plastic ABS (bulk/injection) or Plastic PPS GF40?

For the same stiffness or strength: Plastic PPS GF40 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)	Plastic PPS GF40
Stiff rod or tie (tension)	4.03x heavier	lighter
Stiff beam (bending)	1.59x heavier	lighter
Stiff panel or plate	17% heavier	lighter
Strong rod or tie	2.73x heavier	lighter
Strong beam	1.68x heavier	lighter
Strong panel or plate	31% 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).

Which conducts heat better, Plastic ABS (bulk/injection) or Plastic PPS GF40?

Plastic PPS GF40 conducts heat better: 0.2 W/m·K against 0.17 W/m·K for Plastic ABS (bulk/injection).

Which expands less with temperature?

Plastic PPS GF40 expands less: 12 µm/m·K against 95 µm/m·K for Plastic ABS (bulk/injection).

Among 72 materials

Stiffness against density

Strength against density