Nickel Inconel 718 vs. SLA Resin Tough 2000

Compare Nickel Inconel 718 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	1,207MPasourcetypical, 1.0 in. hot-rolled bar, 0.2% offset	40.4MPasourcetypical
Ultimate tensile strength	1,389MPasourcetypical, 1.0 in. bar	40.4MPasourcetypical
Flexural strength	not sourced	67MPasourcetypical
Elongation at break	20%sourcetypical, 1.0 in. bar	79%sourcetypical
Young's modulus (stiffness)	200GPasourcetypical, 21 °C, annealed + aged	1.8GPasourcetypical
Density	8,221kg/m³sourcenominal, annealed and aged	1,090kg/m³sourcetypical
Strength to weight	147kN·m/kg3.96x higher	37.1kN·m/kg
Stiffness to weight	24.3MN·m/kg14.7x higher	1.65MN·m/kg
Poisson's ratio	0.294sourcetypical, 21 °C, annealed + aged	not sourced
Shear modulus	77.3GPa	not sourced
Bulk modulus	162GPa	not sourced
Speed of sound	4,932m/s	1,285m/s
Thermal
Thermal conductivity	11.4W/m·Ksourcetypical, 21 °C, annealed + aged (calculated from resistivity per footnote a)	not sourced
Thermal expansion	13.2µm/m·Ksourcetypical, mean 21-93 °C, annealed + aged	134µm/m·Ksourcemean 0-150 °C
100 mm part over a 50 °C swing	66µm growth10.2x less	671µm growth
Specific heat	435J/kg·Ksourcetypical, 21 °C	not sourced
Heats up and cools (diffusivity)	3.19mm²/s	not sourced
Thermal shock resistance	3,680W/m	not sourced
Melting point	1,260–1,336°Csourcemelting range	not sourced
Glass transition	not sourced	112°CsourceDMA
Max service temperature	704°Csourceupper use temperature stated by producer	57°CsourceHDT 1.8 MPa
Values for	INCONEL alloy 718, standard grade, 1750 °F/1 hr anneal + 1325 °F/8 hr F.C. to 1150 °F aged; Special Metals bulletin SMC-045 typical values	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 Nickel Inconel 718 stronger than SLA Resin Tough 2000?

Nickel Inconel 718 is stronger: its yield strength is 1,207 MPa against 40.4 MPa for SLA Resin Tough 2000 (29.9x).

Which is lighter, Nickel Inconel 718 or SLA Resin Tough 2000?

SLA Resin Tough 2000 is lighter: 1,090 kg/m³ against 8,221 kg/m³ for Nickel Inconel 718.

Which is stiffer, Nickel Inconel 718 or SLA Resin Tough 2000?

Nickel Inconel 718 is stiffer: Young's modulus 200 GPa against 1.8 GPa for SLA Resin Tough 2000, so the same part in Nickel Inconel 718 deflects less under the same load.

Which is lighter for the same job, Nickel Inconel 718 or SLA Resin Tough 2000?

For the same stiffness or strength: Nickel Inconel 718 is lighter for a stiff rod or tie (tension), stiff beam (bending), strong rod or tie, strong beam; SLA Resin Tough 2000 is lighter for a stiff panel or plate, strong panel or plate.

Part that must be	Nickel Inconel 718	SLA Resin Tough 2000
Stiff rod or tie (tension)	lighter	14.7x heavier
Stiff beam (bending)	lighter	40% heavier
Stiff panel or plate	1.57x heavier	lighter
Strong rod or tie	lighter	3.96x heavier
Strong beam	lighter	28% heavier
Strong panel or plate	38% 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).

Which expands less with temperature?

Nickel Inconel 718 expands less: 13.2 µm/m·K against 134 µm/m·K for SLA Resin Tough 2000.

Among 59 materials

Stiffness against density

Strength against density