DMLS Ti-6Al-4V ELI Titanium vs. Titanium

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

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DMLS Ti-6Al-4V ELI Titanium3D printed metal (DMLS)

Mechanical
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Yield strength	1,100MPasourcetypical, as built, average of horizontal + vertical (M400)	885MPasourcetypical, plate (>0.187 in), annealed, 0.2% offset
Ultimate tensile strength	1,270MPasourcetypical, as built, average of horizontal + vertical (M400)	940MPasourcetypical, plate, annealed
Elongation at break	8.7%sourcetypical at break, as built (M400)	16%sourcetypical, in 2 in., plate annealed
Young's modulus (stiffness)	110GPasourcesame maker and process, sibling grade: EOS Titanium Ti64 (Grade 5) on EOS M 290, as built, XY and Z, typical	107–122GPasourcetypical range, 20 °C
Density	4,400kg/m³sourcetypical part density (ISO 3369), M400	4,430kg/m³sourcenominal
Strength to weight	250kN·m/kg25% higher	200kN·m/kg
Stiffness to weight	25MN·m/kg	25.8MN·m/kg3% higher
Poisson's ratio	0.342sourcewrought TIMETAL 6-4 (TIMET measurement, mean of 10); composition-level, not DMLS-measured	0.342sourcemean of TIMET measurements
Shear modulus	41GPa	42.7GPa4% stiffer in shear
Bulk modulus	116GPa	121GPa
Speed of sound	5,000m/s	5,084m/s
Thermal
Thermal conductivity	6.6W/m·Ksourcebase material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °C	6.6W/m·Ksourcetypical, 20 °C, mill annealed
Thermal expansion	9µm/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)	9µm/m·Ksourcetypical, mean 0-100 °C
100 mm part over a 50 °C swing	45µm growth	45µm growth
Specific heat	580J/kg·Ksourcebase material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °C	580J/kg·Ksourcetypical, 20 °C
Heats up and cools (diffusivity)	2.59mm²/s	2.57mm²/s
Thermal shock resistance	4,825W/m29% more resistant	3,730W/m
Melting point	1,630–1,650°Csourcemelting range, wrought TIMETAL 6-4 (composition-level)	1,630–1,650°Csourcemelting range
Max service temperature	not sourced	400°Csourceupper recommended use temperature
Values for	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	TIMETAL 6-4 (Ti-6Al-4V Grade 5) annealed plate typical (TIMET properties manual) + TIMET datasheet TMC-0150 physical properties

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 Titanium?

DMLS Ti-6Al-4V ELI Titanium is stronger: its yield strength is 1,100 MPa against 885 MPa for Titanium (24%).

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

DMLS Ti-6Al-4V ELI Titanium is lighter: 4,400 kg/m³ against 4,430 kg/m³ for Titanium.

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

Titanium is stiffer: Young's modulus 115 GPa against 110 GPa for DMLS Ti-6Al-4V ELI Titanium, so the same part in Titanium deflects less under the same load.

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

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

Part that must be	DMLS Ti-6Al-4V ELI Titanium	Titanium
Stiff rod or tie (tension)	3% heavier	lighter
Stiff beam (bending)	1% heavier	lighter
Stiff panel or plate	about equal	about equal
Strong rod or tie	lighter	25% heavier
Strong beam	lighter	16% heavier
Strong panel or plate	lighter	12% 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 Titanium?

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

Which expands less with temperature?

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

Among 59 materials

Stiffness against density

Strength against density