Aluminum 2024-T351 vs. SLA Resin Elastic 50A

Compare Aluminum 2024-T351 vs. SLA Resin Elastic 50A strength, stiffness, weight and thermal properties.

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Aluminum 2024-T351Wrought

SLA Resin Elastic 50A3D printed (SLA resin)

Mechanical
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Yield strength	324MPasourcetypical, 0.2% offset, .500 in dia specimen	not given (tensile used)
Ultimate tensile strength	469MPasourcetypical138x stronger	3.4MPasourcetypical
Elongation at break	19%sourcetypical, in 4D	160%sourcetypical
Young's modulus (stiffness)	73.1GPasourcetypical	not sourced
Density	2,770kg/m³sourcenominal	1,010kg/m³sourcetypical
Strength to weight	117kN·m/kg34.7x higher	3.37kN·m/kg
Stiffness to weight	26.4MN·m/kg	not sourced
Poisson's ratio	0.33sourcetypical (handbook physical constant), all tempers	not sourced
Shear modulus	27.5GPa	not sourced
Bulk modulus	71.7GPa	not sourced
Speed of sound	5,137m/s	not sourced
Thermal
Thermal conductivity	120W/m·Ksourcetypical, 20 °C	not sourced
Thermal expansion	22.9µm/m·Ksourcetypical, mean 20-100 °C	not sourced
100 mm part over a 50 °C swing	115µm growth	not sourced
Specific heat	875J/kg·Ksourcetypical, at 100 °C	not sourced
Heats up and cools (diffusivity)	49.5mm²/s	not sourced
Thermal shock resistance	15,561W/m	not sourced
Melting point	502–638°Csourcemelting range	not sourced
Glass transition	not sourced	-34.5°CsourceDMA
Values for	2024-T4/T351, Kaiser Aluminum sheet, coil & plate typical datasheet; Poisson from MIL-HDBK-5J	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.

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 Aluminum 2024-T351 stronger than SLA Resin Elastic 50A?

Aluminum 2024-T351 is stronger: its yield strength is 324 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (95.3x).

Which is lighter, Aluminum 2024-T351 or SLA Resin Elastic 50A?

SLA Resin Elastic 50A is lighter: 1,010 kg/m³ against 2,770 kg/m³ for Aluminum 2024-T351.

Which is lighter for the same job, Aluminum 2024-T351 or SLA Resin Elastic 50A?

For the same stiffness or strength: Aluminum 2024-T351 is lighter for a strong rod or tie, strong beam, strong panel or plate.

Part that must be	Aluminum 2024-T351	SLA Resin Elastic 50A
Strong rod or tie	lighter	34.7x heavier
Strong beam	lighter	7.61x heavier
Strong panel or plate	lighter	3.56x heavier

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