Materials / Compare

Aluminum 7075-T6 vs. DMLS Ti-6Al-4V ELI Titanium

Compare Aluminum 7075-T6 vs. DMLS Ti-6Al-4V ELI Titanium strength, stiffness, weight and thermal properties.

Aluminum 7075-T6Wrought
DMLS Ti-6Al-4V ELI Titanium3D printed metal (DMLS)
MechanicalAluminum 7075-T6DMLS Ti-6Al-4V ELI Titanium
Yield strength503MPa11,100MPa22.19x stronger
Ultimate tensile strength572MPa11,270MPa22.22x stronger
Elongation at break11%126% more ductile8.7%2
Young's modulus (stiffness)71GPa1same maker and process110GPa31.55x stiffer
Density2,800kg/m³41.57x lighter4,400kg/m³2
Strength to weight180kN·m/kg250kN·m/kg39% higher
Stiffness to weight25.4MN·m/kg1% higher25MN·m/kg
Poisson's ratio0.335wrought TIMETAL 6-40.3426
Shear modulus26.7GPa41GPa1.54x stiffer in shear
Bulk modulus69.6GPa116GPa1.67x higher
Speed of sound5,036m/s5,000m/s
1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-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 POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin StandardSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS 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 GF30Aluminum 7075-T6DMLS Ti-6Al-4V ELI Titanium
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-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 POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin StandardSLA 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 3003-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30Aluminum 7075-T6DMLS Ti-6Al-4V ELI Titanium
Strength against densityHigher and further left: stronger for its weight
ThermalAluminum 7075-T6DMLS Ti-6Al-4V ELI Titanium
Thermal conductivity130W/m·K419.7x more heat through a finbase material6.6W/m·K7
Thermal expansion23.4µm/m·K4mean 25-100 °C9µm/m·K82.6x less
100 mm part over a 50 °C swing117µm growth45µm growth2.6x less
Specific heat960J/kg·K41.66x higherbase material580J/kg·K7
Heats up and cools (diffusivity)48.4mm²/s18.7x faster2.59mm²/s
Thermal shock resistance26,370W/m5.46x more resistant4,825W/m
Melting pointmelting range532–635°C4melting range1,630–1,650°C6
1k10k0.1110100Density (kg/m³)Thermal conductivity (W/m·K)Plastic PLAPlastic PETGPlastic ABSPlastic NylonRubberWoodAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-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 POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS 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 GF30Aluminum 7075-T6DMLS Ti-6Al-4V ELI Titanium
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-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 POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM HIPSSLA Resin StandardDMLS AlSi10Mg AluminumDMLS 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 GF30Aluminum 7075-T6DMLS Ti-6Al-4V ELI Titanium
Thermal expansion against thermal conductivityLower and further right: warps less when heated
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Sources8 documents: Kaiser Aluminum, EOS GmbH, U.S. Department of Defense, TIMET
Aluminum 7075-T6
7075-T6/T651, Kaiser Aluminum rod & bar (mechanical) and sheet/coil/plate (physical) typical datasheets; Poisson from MIL-HDBK-5J
DMLS Ti-6Al-4V ELI Titanium
EOS 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 A14
  1. 1
    Alloy 7075 Rod & Bar Technical DataKaiser Aluminumarchived copyAluminum 7075-T6 · Yield strength: typical, 0.2% offset, .500 in dia specimenAluminum 7075-T6 · Ultimate tensile strength: typicalAluminum 7075-T6 · Elongation at break: typical, in 4DAluminum 7075-T6 · Young's modulus (stiffness): typical
  2. 2
    EOS Titanium Ti64ELI Material Data Sheet, M 290 and M 400EOS GmbHarchived copyDMLS Ti-6Al-4V ELI Titanium · Yield strength: typical, as built, average of horizontal + vertical (M400)DMLS Ti-6Al-4V ELI Titanium · Ultimate tensile strength: typical, as built, average of horizontal + vertical (M400)DMLS Ti-6Al-4V ELI Titanium · Elongation at break: typical at break, as built (M400)DMLS Ti-6Al-4V ELI Titanium · Density: typical part density (ISO 3369), M400
  3. 3
    EOS Titanium Ti64 Material Data Sheet, M 290 (2022)EOS GmbHarchived copyDMLS Ti-6Al-4V ELI Titanium · Young's modulus (stiffness): same maker and process, sibling grade: EOS Titanium Ti64 (Grade 5) on EOS M 290, as built, XY and Z, typical
  4. 4
    Alloy 7075 Sheet, Coil & Plate Technical DataKaiser Aluminumarchived copyAluminum 7075-T6 · Density: nominalAluminum 7075-T6 · Thermal conductivity: typical, 20 °C, T651Aluminum 7075-T6 · Thermal expansion: typical, mean 20-100 °CAluminum 7075-T6 · Specific heat: typical, at 100 °CAluminum 7075-T6 · Melting point: melting range
  5. 5
    MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures (2003)U.S. Department of DefenseAluminum 7075-T6 · Poisson's ratio: typical (handbook physical constant)
  6. 6
    TIMETAL 6-4 PropertiesTIMETarchived copyDMLS Ti-6Al-4V ELI Titanium · Poisson's ratio: wrought TIMETAL 6-4 (TIMET measurement, mean of 10); composition-level, not DMLS-measuredDMLS Ti-6Al-4V ELI Titanium · Melting point: melting range, wrought TIMETAL 6-4 (composition-level)
  7. 7
    TIMETAL 6-4 Data SheetTIMETarchived copyDMLS Ti-6Al-4V ELI Titanium · Thermal conductivity: base material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °CDMLS Ti-6Al-4V ELI Titanium · Specific heat: base material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °C
  8. 8
    EOS Titanium Ti64 Grade 23 Material Data SheetEOS GmbHarchived copyDMLS Ti-6Al-4V ELI Titanium · Thermal expansion: mean 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)

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.

DMLS Ti-6Al-4V ELI Titanium is 3D printed: its properties depend on build direction and print settings; these are typical values.

Questions

Mechanical

Is Aluminum 7075-T6 stronger than DMLS Ti-6Al-4V ELI Titanium?

DMLS Ti-6Al-4V ELI Titanium is stronger: its yield strength is 1,100 MPa against 503 MPa for Aluminum 7075-T6 (2.19x).

Which is lighter, Aluminum 7075-T6 or DMLS Ti-6Al-4V ELI Titanium?

Aluminum 7075-T6 is lighter: 2,800 kg/m³ against 4,400 kg/m³ for DMLS Ti-6Al-4V ELI Titanium.

Which is stiffer, Aluminum 7075-T6 or DMLS Ti-6Al-4V ELI Titanium?

DMLS Ti-6Al-4V ELI Titanium is stiffer: Young's modulus 110 GPa against 71 GPa for Aluminum 7075-T6, so the same part in DMLS Ti-6Al-4V ELI Titanium deflects less under the same load.

Which is lighter for the same job, Aluminum 7075-T6 or DMLS Ti-6Al-4V ELI Titanium?

For the same stiffness or strength: Aluminum 7075-T6 is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong panel or plate; DMLS Ti-6Al-4V ELI Titanium is lighter for a strong rod or tie, strong beam.

Part that must beAluminum 7075-T6DMLS Ti-6Al-4V ELI Titanium
Stiff rod or tie (tension)lighter1% heavier
Stiff beam (bending)lighter26% heavier
Stiff panel or platelighter36% heavier
Strong rod or tie39% heavierlighter
Strong beam7% heavierlighter
Strong panel or platelighter6% 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 is more ductile, Aluminum 7075-T6 or DMLS Ti-6Al-4V ELI Titanium?

Aluminum 7075-T6 stretches further before it breaks: 11% elongation at break against 8.7% for DMLS Ti-6Al-4V ELI Titanium.

Thermal

Which conducts heat better, Aluminum 7075-T6 or DMLS Ti-6Al-4V ELI Titanium?

Aluminum 7075-T6 conducts heat better: 130 W/m·K against 6.6 W/m·K for DMLS Ti-6Al-4V ELI Titanium.

Which expands less with temperature?

DMLS Ti-6Al-4V ELI Titanium expands less: 9 µm/m·K against 23.4 µm/m·K for Aluminum 7075-T6.

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