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DMLS Ti-6Al-4V ELI Titanium vs. Plastic LCP GF30

Compare DMLS Ti-6Al-4V ELI Titanium vs. Plastic LCP GF30 strength, stiffness, weight and thermal properties.

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DMLS Ti-6Al-4V ELI Titanium3D printed metal (DMLS)
Plastic LCP GF30Bulk polymer (molded or machined)
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Mechanical
Yield strength1,100MPasourcetypical, as built, average of horizontal + vertical (M400)not given (tensile used)
Ultimate tensile strength1,270MPasourcetypical, as built, average of horizontal + vertical (M400)115MPasourcetensile strength (ISO 527)
Flexural strengthnot sourced184MPasourcetypical (ISO 178)
Elongation at break8.7%sourcetypical at break, as built (M400)1.5%sourcetensile elongation (ISO 527)
Young's modulus (stiffness)110GPasourcesame maker and process, sibling grade: EOS Titanium Ti64 (Grade 5) on EOS M 290, as built, XY and Z, typical11.5GPasourcetensile modulus (ISO 527)
Density4,400kg/m³sourcetypical part density (ISO 3369), M4001,610kg/m³sourcetypical
Strength to weight250kN·m/kg3.5x higher71.4kN·m/kg
Stiffness to weight25MN·m/kg3.5x higher7.14MN·m/kg
Poisson's ratio0.342sourcewrought TIMETAL 6-4 (TIMET measurement, mean of 10); composition-level, not DMLS-measurednot sourced
Shear modulus41GPanot sourced
Bulk modulus116GPanot sourced
Speed of sound5,000m/s2,673m/s
Thermal
Thermal conductivity6.6W/m·Ksourcebase material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °C0.5W/m·Ksourcehot disk (ISO 22007-2), temperature not stated
Thermal expansion9µm/m·Ksourcemean 25-100 °C, ASTM E228; EOS Ti64 Grade 23 (=ELI) on EOS M 290 40 µm; condition not stated (sheet's mechanical data are heat treated)20µm/m·Ksourceflow direction (MD), mean 50-150 °C
100 mm part over a 50 °C swing45µm growth2.22x less100µm growth
Specific heat580J/kg·Ksourcebase material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °C839J/kg·KsourceASTM E1269, temperature not stated
Heats up and cools (diffusivity)2.59mm²/s6.99x faster0.37mm²/s
Thermal shock resistance4,825W/mnot sourced
Melting point1,630–1,650°Csourcemelting range, wrought TIMETAL 6-4 (composition-level)not sourced
Max service temperaturenot sourced288°CsourceHDT 1.8 MPa (ISO 75)
Values forEOS Titanium Ti64ELI (powder 9011-0040; ASTM F136/F3001, i.e. Grade 23) on EOS M400 SF, parameter set Ti64ELI_030_FlexM400_100, 30 µm, as built; ISO 6892-1 A14Sumitomo 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 Ti-6Al-4V ELI Titanium is 3D printed: its properties depend on build direction and print settings; these are typical values.

Questions

Is DMLS Ti-6Al-4V ELI Titanium stronger than Plastic LCP GF30?

DMLS Ti-6Al-4V ELI Titanium is stronger: its yield strength is 1,100 MPa against tensile strength 115 MPa for Plastic LCP GF30 (9.57x).

Which is lighter, DMLS Ti-6Al-4V ELI Titanium or Plastic LCP GF30?

Plastic LCP GF30 is lighter: 1,610 kg/m³ against 4,400 kg/m³ for DMLS Ti-6Al-4V ELI Titanium.

Which is stiffer, DMLS Ti-6Al-4V ELI Titanium or Plastic LCP GF30?

DMLS Ti-6Al-4V ELI Titanium is stiffer: Young's modulus 110 GPa against 11.5 GPa for Plastic LCP GF30, so the same part in DMLS Ti-6Al-4V ELI Titanium deflects less under the same load.

Which is lighter for the same job, DMLS Ti-6Al-4V ELI Titanium or Plastic LCP GF30?

For the same stiffness or strength: DMLS Ti-6Al-4V ELI Titanium is lighter for a stiff rod or tie (tension), stiff beam (bending), strong rod or tie, strong beam, strong panel or plate; Plastic LCP GF30 is lighter for a stiff panel or plate.

Part that must beDMLS Ti-6Al-4V ELI TitaniumPlastic LCP GF30
Stiff rod or tie (tension)lighter3.5x heavier
Stiff beam (bending)lighter13% heavier
Stiff panel or plate29% heavierlighter
Strong rod or tielighter3.5x heavier
Strong beamlighter1.65x heavier
Strong panel or platelighter13% 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, DMLS Ti-6Al-4V ELI Titanium or Plastic LCP GF30?

DMLS Ti-6Al-4V ELI Titanium conducts heat better: 6.6 W/m·K against 0.5 W/m·K for Plastic LCP GF30.

Which expands less with temperature?

DMLS Ti-6Al-4V ELI Titanium expands less: 9 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 316L Stainless SteelDMLS 17-4PH Stainless SteelPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40DMLS Ti-6Al-4V ELI TitaniumPlastic 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 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40DMLS Ti-6Al-4V ELI TitaniumPlastic LCP GF30
Strength against density

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