Materials / Compare

FDM ASA vs. Plastic POM/Acetal

Compare FDM ASA vs. Plastic POM/Acetal strength, stiffness, weight and thermal properties.

FDM ASA3D printed (FDM)
Plastic POM/AcetalBulk polymer (molded or machined)
MechanicalFDM ASAPlastic POM/Acetal
Yield strengthnot given (tensile used)69MPa1
Ultimate tensile strength37MPa269MPa11.86x stronger
Compressive strengthnot sourced124MPa1
Flexural strength65MPa299MPa1
Elongation at break9.2%275%18.15x more ductile
Young's modulus (stiffness)2.45GPa22.8GPa114% stiffer
Density1,050kg/m³235% lighter1,420kg/m³3
Strength to weight35.2kN·m/kg48.6kN·m/kg38% higher
Stiffness to weight2.33MN·m/kg18% higher1.97MN·m/kg
Poisson's rationot sourced0.351
Shear modulusnot sourced1.04GPa
Bulk modulusnot sourced3.11GPa
Speed of sound1,528m/s9% faster1,404m/s
1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 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 PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin StandardSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcretePCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30FDM ASAPlastic POM/Acetal
Stiffness against densityHigher and further left: stiffer for its weight
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 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 PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin StandardSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30FDM ASAPlastic POM/Acetal
Strength against densityHigher and further left: stronger for its weight
ThermalFDM ASAPlastic POM/Acetal
Thermal conductivitybase material0.17W/m·K40.4W/m·K12.35x more heat through a fin
Thermal expansionbase material80–110µm/m·K4mean122µm/m·K1
100 mm part over a 50 °C swing475µm growth28% less610µm growth
Specific heatnot sourcedaverage -18 to 100 °C1,465J/kg·K1
Heats up and cools (diffusivity)not sourced0.192mm²/s
Thermal shock resistancenot sourced52.5W/m
Melting pointnot sourced175°C1
Max service temperatureHDT 1.8 MPa92°C2HDT 1.8 MPa125°C133 °C hotter
1k10k0.1110100Density (kg/m³)Thermal conductivity (W/m·K)Plastic PLAPlastic PETGPlastic ABSPlastic NylonRubberWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 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 PolycarbonateFDM HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcreteBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30FDM ASAPlastic POM/Acetal
Thermal conductivity against densityHigher and further left: spreads more heat for its weight
0.111010010100Thermal conductivity (W/m·K)Thermal expansion (µm/m·K)Plastic PETGPlastic ABSPlastic NylonWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110Copper C10100Copper C12200GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 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 PolycarbonateFDM HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelConcreteBrickPlywoodPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30FDM ASAPlastic POM/Acetal
Thermal expansion against thermal conductivityLower and further right: warps less when heated
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Sources4 documents: DuPont, Bambu Lab, INEOS Styrolution
FDM ASA
Bambu Lab ASA, TDS V3.0, printed specimens X-Y; nozzle 260 °C, bed 80 °C, 200 mm/s, 100% infill; annealed and dried 80 °C for 12 h before testing.
Plastic POM/Acetal
DuPont Delrin 100 acetal homopolymer, Table 2 'Typical Properties of Delrin Acetal Resins' (ASTM methods), Delrin Design Guide Module III hosted on delrin.com
  1. 1
    Delrin Acetal Resin Design Guide, Module IIIDuPontarchived copyPlastic POM/Acetal · Yield strength: typical (single ASTM D638 tensile strength)Plastic POM/Acetal · Ultimate tensile strength: typicalPlastic POM/Acetal · Compressive strength: compressive stress at 10% deformationPlastic POM/Acetal · Flexural strength: flexural yield strength, typicalPlastic POM/Acetal · Elongation at break: typicalPlastic POM/Acetal · Young's modulus (stiffness): typicalPlastic POM/Acetal · Poisson's ratio: typicalPlastic POM/Acetal · Thermal conductivity: typicalPlastic POM/Acetal · Thermal expansion: mean, 29 to 60 °CPlastic POM/Acetal · Specific heat: average -18 to 100 °C, Delrin acetal resins (not grade-specific)Plastic POM/Acetal · Melting point: crystalline melting pointPlastic POM/Acetal · Max service temperature: HDT 1.8 MPa (annealed)
  2. 2
    Bambu ASA Technical Data Sheet, V3.0Bambu LabFDM ASA · Ultimate tensile strength: typicalFDM ASA · Flexural strength: typicalFDM ASA · Elongation at break: typicalFDM ASA · Young's modulus (stiffness): typicalFDM ASA · Density: typicalFDM ASA · Max service temperature: HDT 1.8 MPa
  3. 3
    Delrin 100 Product Data SheetDuPontPlastic POM/Acetal · Density: typical (DuPont product information for Delrin 100 NC010; 'The data listed here fall within the normal range of product properties')
  4. 4
    Luran S 777K (ASA) Product Data SheetINEOS StyrolutionFDM ASA · Thermal conductivity: base material: INEOS Styrolution Luran S 777K injection-molding ASA, typicalFDM ASA · Thermal expansion: base material: INEOS Styrolution Luran S 777K injection-molding ASA, range

Each number points to the document that states it, with the exact basis. Values without a number are computed from the sourced ones. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.

FDM ASA is 3D printed: its properties depend on build direction and print settings; these are typical values.

Questions

Mechanical

Is FDM ASA stronger than Plastic POM/Acetal?

Plastic POM/Acetal is stronger: its yield strength is 69 MPa against tensile strength 37 MPa for FDM ASA (1.86x).

Which is lighter, FDM ASA or Plastic POM/Acetal?

FDM ASA is lighter: 1,050 kg/m³ against 1,420 kg/m³ for Plastic POM/Acetal.

Which is stiffer, FDM ASA or Plastic POM/Acetal?

Plastic POM/Acetal is stiffer: Young's modulus 2.8 GPa against 2.45 GPa for FDM ASA, so the same part in Plastic POM/Acetal deflects less under the same load.

Which is lighter for the same job, FDM ASA or Plastic POM/Acetal?

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

Part that must beFDM ASAPlastic POM/Acetal
Stiff rod or tie (tension)lighter18% heavier
Stiff beam (bending)lighter27% heavier
Stiff panel or platelighter29% heavier
Strong rod or tie38% heavierlighter
Strong beam12% heavierlighter
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 is more ductile, FDM ASA or Plastic POM/Acetal?

Plastic POM/Acetal stretches further before it breaks: 75% elongation at break against 9.2% for FDM ASA.

Thermal

Which handles higher temperatures, FDM ASA or Plastic POM/Acetal?

Plastic POM/Acetal does: 125 °C against 92 °C for FDM ASA.

Which conducts heat better, FDM ASA or Plastic POM/Acetal?

Plastic POM/Acetal conducts heat better: 0.4 W/m·K against 0.17 W/m·K for FDM ASA.

Which expands less with temperature?

FDM ASA expands less: 95 µm/m·K against 122 µm/m·K for Plastic POM/Acetal.

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