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FDM ASA vs. DMLS 17-4PH Stainless Steel

Compare FDM ASA vs. DMLS 17-4PH Stainless Steel strength, stiffness, weight and thermal properties.

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FDM ASA3D printed (FDM)
DMLS 17-4PH Stainless Steel3D printed metal (DMLS)
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Mechanical
Yield strengthnot given (tensile used)861MPasourcemean, as built, horizontal (N=72)
Ultimate tensile strength37MPasourcetypical886MPasourcemean, as built, horizontal (N=72)
Flexural strength65MPasourcetypicalnot sourced
Elongation at break9.2%sourcetypical19.9%sourcemean at break, as built, horizontal
Young's modulus (stiffness)2.45GPasourcetypical197GPasourcebase material: wrought 17-4 PH, Condition H 900 (Cleveland-Cliffs)
Density1,050kg/m³sourcetypical7,790kg/m³sourcemean part density (ISO 3369)
Strength to weight35.2kN·m/kg110kN·m/kg3.14x higher
Stiffness to weight2.33MN·m/kg25.3MN·m/kg10.8x higher
Poisson's rationot sourced0.272sourcebase material: wrought 17-4 PH, all conditions (Cleveland-Cliffs)
Shear modulusnot sourced77.4GPa
Bulk modulusnot sourced144GPa
Speed of sound1,528m/s5,029m/s
Thermal
Thermal conductivity0.17W/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, typical17.9W/m·Ksourcebase material: wrought 17-4 PH, Condition H 900, at 149 °C (Cleveland-Cliffs)
Thermal expansion80–110µm/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, range10.4µm/m·Ksourcemean 25-100 °C, ASTM E228, AFTER atmospheric heat treatment (as-built value not published)
100 mm part over a 50 °C swing475µm growth52µm growth9.13x less
Specific heatnot sourced460J/kg·Ksourcebase material: wrought 17-4 PH, Condition A, 0-100 °C (Cleveland-Cliffs)
Heats up and cools (diffusivity)not sourced5mm²/s
Thermal shock resistancenot sourced5,474W/m
Max service temperature92°CsourceHDT 1.8 MPanot sourced
Values forBambu 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.EOS StainlessSteel 17-4PH IndustryLine (powder 9011-0041), EOS M 290, 40 µm, default job 17-4PH_040_StainlessM291_100, as built, horizontal; ISO 6892 & ASTM E8M

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.

FDM ASA and DMLS 17-4PH Stainless Steel are 3D printed: their properties depend on build direction and print settings; these are typical values.

Questions

Is FDM ASA stronger than DMLS 17-4PH Stainless Steel?

DMLS 17-4PH Stainless Steel is stronger: its yield strength is 861 MPa against tensile strength 37 MPa for FDM ASA (23.3x).

Which is lighter, FDM ASA or DMLS 17-4PH Stainless Steel?

FDM ASA is lighter: 1,050 kg/m³ against 7,790 kg/m³ for DMLS 17-4PH Stainless Steel.

Which is stiffer, FDM ASA or DMLS 17-4PH Stainless Steel?

DMLS 17-4PH Stainless Steel is stiffer: Young's modulus 197 GPa against 2.45 GPa for FDM ASA, so the same part in DMLS 17-4PH Stainless Steel deflects less under the same load.

Which is lighter for the same job, FDM ASA or DMLS 17-4PH Stainless Steel?

For the same stiffness or strength: FDM ASA is lighter for a stiff panel or plate, strong panel or plate; DMLS 17-4PH Stainless Steel is lighter for a stiff rod or tie (tension), stiff beam (bending), strong rod or tie, strong beam.

Part that must beFDM ASADMLS 17-4PH Stainless Steel
Stiff rod or tie (tension)10.8x heavierlighter
Stiff beam (bending)21% heavierlighter
Stiff panel or platelighter1.72x heavier
Strong rod or tie3.14x heavierlighter
Strong beam10% heavierlighter
Strong panel or platelighter1.54x 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 conducts heat better, FDM ASA or DMLS 17-4PH Stainless Steel?

DMLS 17-4PH Stainless Steel conducts heat better: 17.9 W/m·K against 0.17 W/m·K for FDM ASA.

Which expands less with temperature?

DMLS 17-4PH Stainless Steel expands less: 10.4 µm/m·K against 95 µm/m·K for FDM ASA.

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 POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelFDM ASADMLS 17-4PH Stainless Steel
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 POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelBrickFDM ASADMLS 17-4PH Stainless Steel
Strength against density

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