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

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

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FDM ASA3D printed (FDM)

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

Mechanical
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Yield strength	not given (tensile used)	1,100MPasourcetypical, as built, average of horizontal + vertical (M400)
Ultimate tensile strength	37MPasourcetypical	1,270MPasourcetypical, as built, average of horizontal + vertical (M400)
Flexural strength	65MPasourcetypical	not sourced
Elongation at break	9.2%sourcetypical	8.7%sourcetypical at break, as built (M400)
Young's modulus (stiffness)	2.45GPasourcetypical	110GPasourcesame maker and process, sibling grade: EOS Titanium Ti64 (Grade 5) on EOS M 290, as built, XY and Z, typical
Density	1,050kg/m³sourcetypical	4,400kg/m³sourcetypical part density (ISO 3369), M400
Strength to weight	35.2kN·m/kg	250kN·m/kg7.09x higher
Stiffness to weight	2.33MN·m/kg	25MN·m/kg10.7x higher
Poisson's ratio	not sourced	0.342sourcewrought TIMETAL 6-4 (TIMET measurement, mean of 10); composition-level, not DMLS-measured
Shear modulus	not sourced	41GPa
Bulk modulus	not sourced	116GPa
Speed of sound	1,528m/s	5,000m/s
Thermal
Thermal conductivity	0.17W/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, typical	6.6W/m·Ksourcebase material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °C
Thermal expansion	80–110µm/m·Ksourcebase material: INEOS Styrolution Luran S 777K injection-molding ASA, range	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)
100 mm part over a 50 °C swing	475µm growth	45µm growth10.6x less
Specific heat	not sourced	580J/kg·Ksourcebase material: wrought Ti-6Al-4V / 6-4 ELI (TIMET datasheet), 20 °C
Heats up and cools (diffusivity)	not sourced	2.59mm²/s
Thermal shock resistance	not sourced	4,825W/m
Melting point	not sourced	1,630–1,650°Csourcemelting range, wrought TIMETAL 6-4 (composition-level)
Max service temperature	92°CsourceHDT 1.8 MPa	not sourced
Values for	Bambu 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 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

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

Questions

Is FDM ASA stronger than DMLS Ti-6Al-4V ELI Titanium?

DMLS Ti-6Al-4V ELI Titanium is stronger: its yield strength is 1,100 MPa against tensile strength 37 MPa for FDM ASA (29.7x).

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

FDM ASA is lighter: 1,050 kg/m³ against 4,400 kg/m³ for DMLS Ti-6Al-4V ELI Titanium.

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

DMLS Ti-6Al-4V ELI Titanium is stiffer: Young's modulus 110 GPa against 2.45 GPa for FDM ASA, so the same part in DMLS Ti-6Al-4V ELI Titanium deflects less under the same load.

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

For the same stiffness or strength: FDM ASA is lighter for a stiff panel or plate; 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.

Part that must be	FDM ASA	DMLS Ti-6Al-4V ELI Titanium
Stiff rod or tie (tension)	10.7x heavier	lighter
Stiff beam (bending)	1.6x heavier	lighter
Stiff panel or plate	lighter	18% heavier
Strong rod or tie	7.09x heavier	lighter
Strong beam	2.29x heavier	lighter
Strong panel or plate	30% heavier	lighter

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 Ti-6Al-4V ELI Titanium?

DMLS Ti-6Al-4V ELI Titanium conducts heat better: 6.6 W/m·K against 0.17 W/m·K for FDM ASA.

Which expands less with temperature?

DMLS Ti-6Al-4V ELI Titanium expands less: 9 µm/m·K against 95 µm/m·K for FDM ASA.

Among 59 materials

Stiffness against density

Strength against density