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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Celanese GUR 4120 (avg. molecular weight 4.7x10^6 g/mol), typical values on compression-molded specimens; CTE and thermal conductivity from Celanese's generic UHMWPE guide (grade not named)
SLA Resin Tough 2000
Formlabs Tough 2000 Resin V2 (FLTO2002), TDS Rev. 01 10/06/2025; printed on Form 4 at 100 µm, washed in Form Wash V2 10+5 min in >=99% IPA, post-cured 70 °C for 12 min in Form Cure V2. Orientation not stated.
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GUR UHMW-PE Overview (GUR-015)CelanesePlastic UHMWPE · Yield strength: typical, tensile stress at yield ISO 527, 50 mm/minPlastic UHMWPE · Ultimate tensile strength: typical, tensile stress at break ISO 527, 50 mm/minPlastic UHMWPE · Elongation at break: typical, nominal elongation at break ISO 527Plastic UHMWPE · Young's modulus (stiffness): typical, tensile modulus ISO 527, 1 mm/minPlastic UHMWPE · Density: typicalPlastic UHMWPE · Melting point: DSC 10 K/minPlastic UHMWPE · Max service temperature: recommended max constant operating temperature
GUR UHMW-PE Polymer Guide (GUR-003)Celanesearchived copyPlastic UHMWPE · Thermal conductivity: typical, unfilled (narrative value, generic Celanese UHMWPE)Plastic UHMWPE · Thermal expansion: typical, 20 to 100 °C (generic Celanese UHMWPE)
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.
SLA Resin Tough 2000 is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Mechanical
Is Plastic UHMWPE stronger than SLA Resin Tough 2000?
SLA Resin Tough 2000 is stronger: its yield strength is 40.4 MPa against 20 MPa for Plastic UHMWPE (2.02x).
Which is lighter, Plastic UHMWPE or SLA Resin Tough 2000?
Plastic UHMWPE is lighter: 930 kg/m³ against 1,090 kg/m³ for SLA Resin Tough 2000.
Which is stiffer, Plastic UHMWPE or SLA Resin Tough 2000?
SLA Resin Tough 2000 is stiffer: Young's modulus 1.8 GPa against 0.66 GPa for Plastic UHMWPE, so the same part in SLA Resin Tough 2000 deflects less under the same load.
Which is lighter for the same job, Plastic UHMWPE or SLA Resin Tough 2000?
For the same stiffness or strength: SLA Resin Tough 2000 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 UHMWPE
SLA Resin Tough 2000
Stiff rod or tie (tension)
2.33x heavier
lighter
Stiff beam (bending)
41% heavier
lighter
Stiff panel or plate
19% heavier
lighter
Strong rod or tie
1.72x heavier
lighter
Strong beam
36% heavier
lighter
Strong panel or plate
21% 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, Plastic UHMWPE or SLA Resin Tough 2000?
Plastic UHMWPE stretches further before it breaks: 465% elongation at break against 79% for SLA Resin Tough 2000.
Thermal
Which expands less with temperature?
SLA Resin Tough 2000 expands less: 134 µm/m·K against 200 µm/m·K for Plastic UHMWPE.