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SLA Resin Elastic 50A vs. Steel AISI 4340

Compare SLA Resin Elastic 50A vs. Steel AISI 4340 strength, stiffness, weight and thermal properties.

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SLA Resin Elastic 50A3D printed (SLA resin)
Steel AISI 4340Wrought
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Mechanical
Yield strengthnot given (tensile used)1,035MPasourcetypical, transverse
Ultimate tensile strength3.4MPasourcetypical1,140MPasourcetypical, transverse
Elongation at break160%sourcetypical18%sourcetypical, transverse
Young's modulus (stiffness)not sourced200GPasourceMIL-HDBK-5J design value (AISI 4340, quenched and tempered)
Density1,010kg/m³sourcetypical7.76x lighter7,840kg/m³sourcetypical
Strength to weight3.37kN·m/kg132kN·m/kg39.2x higher
Stiffness to weightnot sourced25.5MN·m/kg
Poisson's rationot sourced0.32sourceMIL-HDBK-5J design value (AISI 4340, quenched and tempered)
Shear modulusnot sourced75.7GPa
Bulk modulusnot sourced185GPa
Speed of soundnot sourced5,049m/s
Thermal
Thermal conductivitynot sourced37.5W/m·Ksourcetypical
Thermal expansionnot sourced11.3µm/m·Ksourcemean, -18 to 93 °C
100 mm part over a 50 °C swingnot sourced56.5µm growth
Specific heatnot sourced448J/kg·Ksourcetypical
Heats up and cools (diffusivity)not sourced10.7mm²/s
Thermal shock resistancenot sourced11,678W/m
Glass transition-34.5°CsourceDMAnot sourced
Values forFormlabs 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.Carpenter (Latrobe) Lescalloy 4340 VAC-ARC datasheet; mechanical row for 1100 °F temper; physical properties grade-level

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 SLA Resin Elastic 50A stronger than Steel AISI 4340?

Steel AISI 4340 is stronger: its yield strength is 1,035 MPa against tensile strength 3.4 MPa for SLA Resin Elastic 50A (304x).

Which is lighter, SLA Resin Elastic 50A or Steel AISI 4340?

SLA Resin Elastic 50A is lighter: 1,010 kg/m³ against 7,840 kg/m³ for Steel AISI 4340.

Which is lighter for the same job, SLA Resin Elastic 50A or Steel AISI 4340?

For the same stiffness or strength: Steel AISI 4340 is lighter for a strong rod or tie, strong beam, strong panel or plate.

Part that must beSLA Resin Elastic 50ASteel AISI 4340
Strong rod or tie39.2x heavierlighter
Strong beam5.83x heavierlighter
Strong panel or plate2.25x heavierlighter

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

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless 304Stainless 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel A992Stainless 303Stainless 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelSteel AISI 4340
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberAluminumSteelIronTitaniumSteel AISI 1018Stainless 304Stainless 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel A992Stainless 303Stainless 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickSLA Resin Elastic 50ASteel AISI 4340
Strength against density

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