Aluminum 2024-T351 vs. SLA Resin Tough 2000

Compare Aluminum 2024-T351 vs. SLA Resin Tough 2000 strength, stiffness, weight and thermal properties.

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Aluminum 2024-T351Wrought

SLA Resin Tough 20003D printed (SLA resin)

Mechanical
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Yield strength	324MPasourcetypical, 0.2% offset, .500 in dia specimen	40.4MPasourcetypical
Ultimate tensile strength	469MPasourcetypical11.6x stronger	40.4MPasourcetypical
Flexural strength	not sourced	67MPasourcetypical
Elongation at break	19%sourcetypical, in 4D	79%sourcetypical
Young's modulus (stiffness)	73.1GPasourcetypical40.6x stiffer	1.8GPasourcetypical
Density	2,770kg/m³sourcenominal	1,090kg/m³sourcetypical
Strength to weight	117kN·m/kg3.16x higher	37.1kN·m/kg
Stiffness to weight	26.4MN·m/kg16x higher	1.65MN·m/kg
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	1,285m/s
Thermal
Thermal conductivity	120W/m·Ksourcetypical, 20 °C	not sourced
Thermal expansion	22.9µm/m·Ksourcetypical, mean 20-100 °C	134µm/m·Ksourcemean 0-150 °C
100 mm part over a 50 °C swing	115µm growth5.86x less	671µm growth
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	112°CsourceDMA
Max service temperature	not sourced	57°CsourceHDT 1.8 MPa
Values for	2024-T4/T351, Kaiser Aluminum sheet, coil & plate typical datasheet; Poisson from MIL-HDBK-5J	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.

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 Tough 2000 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 Tough 2000?

Aluminum 2024-T351 is stronger: its yield strength is 324 MPa against 40.4 MPa for SLA Resin Tough 2000 (8.02x).

Which is lighter, Aluminum 2024-T351 or SLA Resin Tough 2000?

SLA Resin Tough 2000 is lighter: 1,090 kg/m³ against 2,770 kg/m³ for Aluminum 2024-T351.

Which is stiffer, Aluminum 2024-T351 or SLA Resin Tough 2000?

Aluminum 2024-T351 is stiffer: Young's modulus 73.1 GPa against 1.8 GPa for SLA Resin Tough 2000, so the same part in Aluminum 2024-T351 deflects less under the same load.

Which is lighter for the same job, Aluminum 2024-T351 or SLA Resin Tough 2000?

For the same stiffness or strength: Aluminum 2024-T351 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	Aluminum 2024-T351	SLA Resin Tough 2000
Stiff rod or tie (tension)	lighter	16x heavier
Stiff beam (bending)	lighter	2.51x heavier
Stiff panel or plate	lighter	35% heavier
Strong rod or tie	lighter	3.16x heavier
Strong beam	lighter	1.58x heavier
Strong panel or plate	lighter	11% 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).

Which expands less with temperature?

Aluminum 2024-T351 expands less: 22.9 µm/m·K against 134 µm/m·K for SLA Resin Tough 2000.

Among 59 materials

Stiffness against density

Strength against density