Thermal conductivity against densityHigher and further left: spreads more heat for its weightThermal expansion against thermal conductivityLower and further right: warps less when heated
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PLEXIGLAS GS and XT Technical Information (Ref. No. 211-1)Röhmarchived copyPlastic PMMA · Ultimate tensile strength: typical, 23 °CPlastic PMMA · Compressive strength: compressive yield stress, typicalPlastic PMMA · Flexural strength: typicalPlastic PMMA · Elongation at break: typicalPlastic PMMA · Young's modulus (stiffness): typical, short-termPlastic PMMA · Density: typicalPlastic PMMA · Poisson's ratio: typicalPlastic PMMA · Thermal conductivity: typicalPlastic PMMA · Thermal expansion: 0-50 °CPlastic PMMA · Specific heat: typicalPlastic PMMA · Max service temperature: max. permanent service temperature
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Luran S 777K (ASA) Product Data SheetINEOS StyrolutionFDM ASA · Thermal conductivity: base material: INEOS Styrolution Luran S 777K injection-molding ASA, typicalFDM ASA · Thermal expansion: base material: INEOS Styrolution Luran S 777K injection-molding ASA, range
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 ASA is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Mechanical
Is FDM ASA stronger than Plastic PMMA?
Plastic PMMA is stronger: its tensile strength is 80 MPa against 37 MPa for FDM ASA (2.16x).
Which is lighter, FDM ASA or Plastic PMMA?
FDM ASA is lighter: 1,050 kg/m³ against 1,190 kg/m³ for Plastic PMMA.
Which is stiffer, FDM ASA or Plastic PMMA?
Plastic PMMA is stiffer: Young's modulus 3.3 GPa against 2.45 GPa for FDM ASA, so the same part in Plastic PMMA deflects less under the same load.
Which is lighter for the same job, FDM ASA or Plastic PMMA?
For the same stiffness or strength: FDM ASA is lighter for a stiff panel or plate; Plastic PMMA is lighter for a stiff rod or tie (tension), stiff beam (bending), strong rod or tie, strong beam, strong panel or plate.
Part that must be
FDM ASA
Plastic PMMA
Stiff rod or tie (tension)
19% heavier
lighter
Stiff beam (bending)
2% heavier
lighter
Stiff panel or plate
lighter
3% heavier
Strong rod or tie
1.91x heavier
lighter
Strong beam
48% heavier
lighter
Strong panel or plate
30% 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 is more ductile, FDM ASA or Plastic PMMA?
FDM ASA stretches further before it breaks: 9.2% elongation at break against 5.5% for Plastic PMMA.
Thermal
Which conducts heat better, FDM ASA or Plastic PMMA?
Plastic PMMA conducts heat better: 0.19 W/m·K against 0.17 W/m·K for FDM ASA.
Which expands less with temperature?
Plastic PMMA expands less: 70 µm/m·K against 95 µm/m·K for FDM ASA.