Aluminum 6061-T6 vs. SLA Resin Tough 2000

Compare Aluminum 6061-T6 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	276MPasourcetypical, 0.2% offset, .500 in dia specimen	40.4MPasourcetypical
Ultimate tensile strength	310MPasourcetypical7.67x stronger	40.4MPasourcetypical
Flexural strength	not sourced	67MPasourcetypical
Elongation at break	17%sourcetypical, in 4D, 0.500 in dia specimen	79%sourcetypical
Young's modulus (stiffness)	68.3GPasourcetypical37.9x stiffer	1.8GPasourcetypical
Density	2,700kg/m³sourcenominal	1,090kg/m³sourcetypical
Strength to weight	102kN·m/kg2.76x higher	37.1kN·m/kg
Stiffness to weight	25.3MN·m/kg15.3x higher	1.65MN·m/kg
Poisson's ratio	0.33sourcetypical (handbook physical constant)	not sourced
Shear modulus	25.7GPa	not sourced
Bulk modulus	67GPa	not sourced
Speed of sound	5,030m/s	1,285m/s
Thermal
Thermal conductivity	167W/m·Ksourcetypical, 20 °C	not sourced
Thermal expansion	23.6µm/m·Ksourcetypical, mean 20-100 °C	134µm/m·Ksourcemean 0-150 °C
100 mm part over a 50 °C swing	118µm growth5.69x less	671µm growth
Specific heat	896J/kg·Ksourcetypical, at 100 °C	not sourced
Heats up and cools (diffusivity)	69mm²/s	not sourced
Thermal shock resistance	19,159W/m	not sourced
Melting point	582–652°Csourcesolidus-liquidus	not sourced
Glass transition	not sourced	112°CsourceDMA
Max service temperature	not sourced	57°CsourceHDT 1.8 MPa
Values for	6061-T6/T651, Kaiser Aluminum typical properties; 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 6061-T6 stronger than SLA Resin Tough 2000?

Aluminum 6061-T6 is stronger: its yield strength is 276 MPa against 40.4 MPa for SLA Resin Tough 2000 (6.83x).

Which is lighter, Aluminum 6061-T6 or SLA Resin Tough 2000?

SLA Resin Tough 2000 is lighter: 1,090 kg/m³ against 2,700 kg/m³ for Aluminum 6061-T6.

Which is stiffer, Aluminum 6061-T6 or SLA Resin Tough 2000?

Aluminum 6061-T6 is stiffer: Young's modulus 68.3 GPa against 1.8 GPa for SLA Resin Tough 2000, so the same part in Aluminum 6061-T6 deflects less under the same load.

Which is lighter for the same job, Aluminum 6061-T6 or SLA Resin Tough 2000?

For the same stiffness or strength: Aluminum 6061-T6 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 6061-T6	SLA Resin Tough 2000
Stiff rod or tie (tension)	lighter	15.3x heavier
Stiff beam (bending)	lighter	2.49x heavier
Stiff panel or plate	lighter	36% heavier
Strong rod or tie	lighter	2.76x heavier
Strong beam	lighter	45% heavier
Strong panel or plate	lighter	6% 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 6061-T6 expands less: 23.6 µm/m·K against 134 µm/m·K for SLA Resin Tough 2000.

Among 59 materials

Stiffness against density

Strength against density