Materials / Compare

Plastic POM/Acetal vs. SLA Resin Tough 2000

Compare Plastic POM/Acetal vs. SLA Resin Tough 2000 strength, stiffness, weight and thermal properties.

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Plastic POM/AcetalBulk polymer (molded or machined)
SLA Resin Tough 20003D printed (SLA resin)
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Mechanical
Yield strength69MPasourcetypical (single ASTM D638 tensile strength)40.4MPasourcetypical
Ultimate tensile strength69MPasourcetypical1.71x stronger40.4MPasourcetypical
Compressive strength124MPasourcecompressive stress at 10% deformationnot sourced
Flexural strength99MPasourceflexural yield strength, typical67MPasourcetypical
Elongation at break75%sourcetypical79%sourcetypical
Young's modulus (stiffness)2.8GPasourcetypical1.56x stiffer1.8GPasourcetypical
Density1,420kg/m³sourcetypical (DuPont product information for Delrin 100 NC010; 'The data listed here fall within the normal range of product properties')1,090kg/m³sourcetypical
Strength to weight48.6kN·m/kg31% higher37.1kN·m/kg
Stiffness to weight1.97MN·m/kg19% higher1.65MN·m/kg
Poisson's ratio0.35sourcetypicalnot sourced
Shear modulus1.04GPanot sourced
Bulk modulus3.11GPanot sourced
Speed of sound1,404m/s1,285m/s
Thermal
Thermal conductivity0.4W/m·Ksourcetypicalnot sourced
Thermal expansion122µm/m·Ksourcemean, 29 to 60 °C134µm/m·Ksourcemean 0-150 °C
100 mm part over a 50 °C swing610µm growth10% less671µm growth
Specific heat1,465J/kg·Ksourceaverage -18 to 100 °C, Delrin acetal resins (not grade-specific)not sourced
Heats up and cools (diffusivity)0.192mm²/snot sourced
Thermal shock resistance52.5W/mnot sourced
Melting point175°Csourcecrystalline melting pointnot sourced
Glass transitionnot sourced112°CsourceDMA
Max service temperature125°CsourceHDT 1.8 MPa (annealed)57°CsourceHDT 1.8 MPa
Values forDuPont Delrin 100 acetal homopolymer, Table 2 'Typical Properties of Delrin Acetal Resins' (ASTM methods), Delrin Design Guide Module III hosted on delrin.comFormlabs 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 Plastic POM/Acetal stronger than SLA Resin Tough 2000?

Plastic POM/Acetal is stronger: its yield strength is 69 MPa against 40.4 MPa for SLA Resin Tough 2000 (1.71x).

Which is lighter, Plastic POM/Acetal or SLA Resin Tough 2000?

SLA Resin Tough 2000 is lighter: 1,090 kg/m³ against 1,420 kg/m³ for Plastic POM/Acetal.

Which is stiffer, Plastic POM/Acetal or SLA Resin Tough 2000?

Plastic POM/Acetal is stiffer: Young's modulus 2.8 GPa against 1.8 GPa for SLA Resin Tough 2000, so the same part in Plastic POM/Acetal deflects less under the same load.

Which is lighter for the same job, Plastic POM/Acetal or SLA Resin Tough 2000?

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

Part that must bePlastic POM/AcetalSLA Resin Tough 2000
Stiff rod or tie (tension)lighter19% heavier
Stiff beam (bending)4% heavierlighter
Stiff panel or plate12% heavierlighter
Strong rod or tielighter31% heavier
Strong beamlighter10% heavier
Strong panel or plateabout equalabout equal

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?

Plastic POM/Acetal expands less: 122 µm/m·K against 134 µm/m·K for SLA Resin Tough 2000.

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 AISI 4340Steel 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 Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelPlastic POM/AcetalSLA Resin Tough 2000
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 AISI 4340Steel 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 Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickPlastic POM/AcetalSLA Resin Tough 2000
Strength against density

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