Aluminum 7050-T7451 vs. SLA Resin Tough 2000

Compare Aluminum 7050-T7451 vs. SLA Resin Tough 2000 strength, stiffness, weight and thermal properties.

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SLA Resin Tough 20003D printed (SLA resin)

Mechanical
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Yield strength	469MPasourcetypical, longitudinal, 0.2% offset	40.4MPasourcetypical
Ultimate tensile strength	524MPasourcetypical, longitudinal	40.4MPasourcetypical
Flexural strength	not sourced	67MPasourcetypical
Elongation at break	11%sourcetypical, longitudinal	79%sourcetypical
Young's modulus (stiffness)	70.3GPasourcetypical39.1x stiffer	1.8GPasourcetypical
Density	2,830kg/m³sourcenominal	1,090kg/m³sourcetypical
Strength to weight	166kN·m/kg4.47x higher	37.1kN·m/kg
Stiffness to weight	24.8MN·m/kg15x higher	1.65MN·m/kg
Poisson's ratio	0.33sourcetypical (handbook physical constant)	not sourced
Shear modulus	26.4GPa	not sourced
Bulk modulus	68.9GPa	not sourced
Speed of sound	4,984m/s	1,285m/s
Thermal
Thermal conductivity	157W/m·Ksourcetypical, 20 °C	not sourced
Thermal expansion	23.5µm/m·Ksourcetypical, mean 20-100 °C	134µm/m·Ksourcemean 0-150 °C
100 mm part over a 50 °C swing	118µm growth5.71x less	671µm growth
Specific heat	860J/kg·Ksourcetypical, at 100 °C	not sourced
Heats up and cools (diffusivity)	64.5mm²/s	not sourced
Thermal shock resistance	29,862W/m	not sourced
Melting point	524–635°Csourcemelting range	not sourced
Glass transition	not sourced	112°CsourceDMA
Max service temperature	not sourced	57°CsourceHDT 1.8 MPa
Values for	7050-T7451 plate, Kaiser Aluminum sheet, coil & plate typical datasheet (longitudinal); 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 7050-T7451 stronger than SLA Resin Tough 2000?

Aluminum 7050-T7451 is stronger: its yield strength is 469 MPa against 40.4 MPa for SLA Resin Tough 2000 (11.6x).

Which is lighter, Aluminum 7050-T7451 or SLA Resin Tough 2000?

SLA Resin Tough 2000 is lighter: 1,090 kg/m³ against 2,830 kg/m³ for Aluminum 7050-T7451.

Which is stiffer, Aluminum 7050-T7451 or SLA Resin Tough 2000?

Aluminum 7050-T7451 is stiffer: Young's modulus 70.3 GPa against 1.8 GPa for SLA Resin Tough 2000, so the same part in Aluminum 7050-T7451 deflects less under the same load.

Which is lighter for the same job, Aluminum 7050-T7451 or SLA Resin Tough 2000?

For the same stiffness or strength: Aluminum 7050-T7451 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 7050-T7451	SLA Resin Tough 2000
Stiff rod or tie (tension)	lighter	15x heavier
Stiff beam (bending)	lighter	2.41x heavier
Stiff panel or plate	lighter	31% heavier
Strong rod or tie	lighter	4.47x heavier
Strong beam	lighter	1.97x heavier
Strong panel or plate	lighter	31% 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 7050-T7451 expands less: 23.5 µm/m·K against 134 µm/m·K for SLA Resin Tough 2000.

Among 59 materials

Stiffness against density

Strength against density