Materials / Compare

DMLS 17-4PH Stainless Steel vs. Plastic LCP GF30

Compare DMLS 17-4PH Stainless Steel vs. Plastic LCP GF30 strength, stiffness, weight and thermal properties.

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DMLS 17-4PH Stainless Steel3D printed metal (DMLS)
Plastic LCP GF30Bulk polymer (molded or machined)
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Mechanical
Yield strength861MPasourcemean, as built, horizontal (N=72)not given (tensile used)
Ultimate tensile strength886MPasourcemean, as built, horizontal (N=72)115MPasourcetensile strength (ISO 527)
Flexural strengthnot sourced184MPasourcetypical (ISO 178)
Elongation at break19.9%sourcemean at break, as built, horizontal1.5%sourcetensile elongation (ISO 527)
Young's modulus (stiffness)197GPasourcebase material: wrought 17-4 PH, Condition H 900 (Cleveland-Cliffs)11.5GPasourcetensile modulus (ISO 527)
Density7,790kg/m³sourcemean part density (ISO 3369)1,610kg/m³sourcetypical
Strength to weight110kN·m/kg1.55x higher71.4kN·m/kg
Stiffness to weight25.3MN·m/kg3.54x higher7.14MN·m/kg
Poisson's ratio0.272sourcebase material: wrought 17-4 PH, all conditions (Cleveland-Cliffs)not sourced
Shear modulus77.4GPanot sourced
Bulk modulus144GPanot sourced
Speed of sound5,029m/s2,673m/s
Thermal
Thermal conductivity17.9W/m·Ksourcebase material: wrought 17-4 PH, Condition H 900, at 149 °C (Cleveland-Cliffs)0.5W/m·Ksourcehot disk (ISO 22007-2), temperature not stated
Thermal expansion10.4µm/m·Ksourcemean 25-100 °C, ASTM E228, AFTER atmospheric heat treatment (as-built value not published)20µm/m·Ksourceflow direction (MD), mean 50-150 °C
100 mm part over a 50 °C swing52µm growth1.92x less100µm growth
Specific heat460J/kg·Ksourcebase material: wrought 17-4 PH, Condition A, 0-100 °C (Cleveland-Cliffs)839J/kg·KsourceASTM E1269, temperature not stated
Heats up and cools (diffusivity)5mm²/s13.5x faster0.37mm²/s
Thermal shock resistance5,474W/mnot sourced
Max service temperaturenot sourced288°CsourceHDT 1.8 MPa (ISO 75)
Values forEOS 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 E8MSumitomo Chemical SUMIKASUPER LCP E6006L (30% glass fibre; high strength, low shrinkage); SUMIKASUPER LCP Technical Note, Version 04 / Nov. 2023, typical values.

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.

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

Questions

Is DMLS 17-4PH Stainless Steel stronger than Plastic LCP GF30?

DMLS 17-4PH Stainless Steel is stronger: its yield strength is 861 MPa against tensile strength 115 MPa for Plastic LCP GF30 (7.48x).

Which is lighter, DMLS 17-4PH Stainless Steel or Plastic LCP GF30?

Plastic LCP GF30 is lighter: 1,610 kg/m³ against 7,790 kg/m³ for DMLS 17-4PH Stainless Steel.

Which is stiffer, DMLS 17-4PH Stainless Steel or Plastic LCP GF30?

DMLS 17-4PH Stainless Steel is stiffer: Young's modulus 197 GPa against 11.5 GPa for Plastic LCP GF30, so the same part in DMLS 17-4PH Stainless Steel deflects less under the same load.

Which is lighter for the same job, DMLS 17-4PH Stainless Steel or Plastic LCP GF30?

For the same stiffness or strength: DMLS 17-4PH Stainless Steel is lighter for a stiff rod or tie (tension), strong rod or tie; Plastic LCP GF30 is lighter for a stiff beam (bending), stiff panel or plate, strong beam, strong panel or plate.

Part that must beDMLS 17-4PH Stainless SteelPlastic LCP GF30
Stiff rod or tie (tension)lighter3.54x heavier
Stiff beam (bending)17% heavierlighter
Stiff panel or plate1.88x heavierlighter
Strong rod or tielighter1.55x heavier
Strong beam26% heavierlighter
Strong panel or plate1.77x 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).

Which conducts heat better, DMLS 17-4PH Stainless Steel or Plastic LCP GF30?

DMLS 17-4PH Stainless Steel conducts heat better: 17.9 W/m·K against 0.5 W/m·K for Plastic LCP GF30.

Which expands less with temperature?

DMLS 17-4PH Stainless Steel expands less: 10.4 µm/m·K against 20 µm/m·K for Plastic LCP GF30.

Among 72 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel 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 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 SteelPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40DMLS 17-4PH Stainless SteelPlastic LCP GF30
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel 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 POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40DMLS 17-4PH Stainless SteelPlastic LCP GF30
Strength against density

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