SLA Resin Elastic 50A vs. Plastic UHMWPE

Compare SLA Resin Elastic 50A vs. Plastic UHMWPE strength, stiffness, weight and thermal properties.

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SLA Resin Elastic 50A3D printed (SLA resin)

Plastic UHMWPEBulk polymer (molded or machined)

Mechanical
Try it on a partA bracket to run stress or thermal on, free in your browser	Open in LessCAD	Open in LessCAD
Yield strength	not given (tensile used)	20MPasourcetypical, tensile stress at yield ISO 527, 50 mm/min
Ultimate tensile strength	3.4MPasourcetypical	43MPasourcetypical, tensile stress at break ISO 527, 50 mm/min
Elongation at break	160%sourcetypical	465%sourcetypical, nominal elongation at break ISO 527
Young's modulus (stiffness)	not sourced	0.66GPasourcetypical, tensile modulus ISO 527, 1 mm/min
Density	1,010kg/m³sourcetypical	930kg/m³sourcetypical
Strength to weight	3.37kN·m/kg	21.5kN·m/kg6.39x higher
Stiffness to weight	not sourced	0.71MN·m/kg
Poisson's ratio	not sourced	not sourced
Shear modulus	not sourced	not sourced
Bulk modulus	not sourced	not sourced
Speed of sound	not sourced	842m/s
Thermal
Thermal conductivity	not sourced	0.4W/m·Ksourcetypical, unfilled (narrative value, generic Celanese UHMWPE)
Thermal expansion	not sourced	200µm/m·Ksourcetypical, 20 to 100 °C (generic Celanese UHMWPE)
100 mm part over a 50 °C swing	not sourced	1,000µm growth
Specific heat	not sourced	not sourced
Heats up and cools (diffusivity)	not sourced	not sourced
Thermal shock resistance	not sourced	not sourced
Melting point	not sourced	130–138°CsourceDSC 10 K/min
Glass transition	-34.5°CsourceDMA	not sourced
Max service temperature	not sourced	80°Csourcerecommended max constant operating temperature
Values for	Formlabs Elastic 50A Resin V2 (FLELCL02), TDS Rev. 01 24.01.2024; parts printed on Form 3, 100 µm, Elastic 50A V2 settings and post-processing; tensile on Die C specimens cut from printed sheets after 3+ h at 23 °C.	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)

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.

SLA Resin Elastic 50A is 3D printed: its properties depend on build direction and print settings; these are typical values.

Questions

Is SLA Resin Elastic 50A stronger than Plastic UHMWPE?

Plastic UHMWPE is stronger: its yield strength is 20 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (5.88x).

Which is lighter, SLA Resin Elastic 50A or Plastic UHMWPE?

Plastic UHMWPE is lighter: 930 kg/m³ against 1,010 kg/m³ for SLA Resin Elastic 50A.

Which is lighter for the same job, SLA Resin Elastic 50A or Plastic UHMWPE?

For the same stiffness or strength: Plastic UHMWPE is lighter for a strong rod or tie, strong beam, strong panel or plate.

Part that must be	SLA Resin Elastic 50A	Plastic UHMWPE
Strong rod or tie	6.39x heavier	lighter
Strong beam	3.54x heavier	lighter
Strong panel or plate	2.63x 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