Status as of 18.03.2026

METAL SOLUTIONS

EOS Titanium Ti64 Grade 5

Material Data Sheet

EOS Titanium Ti64 Grade 5 is a Ti6Al4V alloy, which is well-known for having excellent mechanical properties: low density with high strength and excellent corrosion resistance. The alloy has low weight compared to superalloys and steels and higher fatigue resistance compared to other lightweight alloys. EOS Titanium Ti64 Grade 5 is a titanium alloy powder intended for manufacturing parts on EOS metal systems with EOS DMLS processes.

Parts built with EOS Titanium Ti64 Grade 5 powder can be machined, shot-peened and polished in as manufactured and heat treated states. Due to the layerwise building method, the parts have a certain anisotropy. Heat treatment is recommended to reduce internal stresses and increase ductility.

EOS Titanium Ti64 Grade 5 powder can be used on the EOS M 290 with a 40 µm and 80 µm process and on the EOS M 400-4 with an 80 µm process.

MAIN CHARACTERISTICS

Low weight combined with high strength
Excellent corrosion resistance
High fatigue resistance compared to other lightweight alloys
The parts fulfill chemical requirements for Grade 5 alloy

Download Process Data Sheet (PDF)

TYPICAL APPLICATIONS

Aerospace components
Automotive components
Other industrial applications where low weight in combination with high strength are required

The EOS Quality Triangle

EOS uses an approach that is unique in the AM industry, taking each of the three central technical elements of the production process into account: the system, the material and the process. The data resulting from each combination is assigned a Technology Readiness Level (TRL) which makes the expected performance and production capability of the solution transparent.

EOS incorporates these TRLs into the following two categories:

Premium products (TRL 7-9): offer highly validated data, proven capability and reproducible part properties.
Core products (TRL 3 and 5): enable early customer access to newest technology still under development and are therefore less mature with less data.

All of the data stated in this material data sheet is produced according to EOS Quality Management System and international standards

POWDER PROPERTIES

EOS Titanium Ti64 Grade 5 powder is classified as Grade 5 titanium alloy according to ASTM B348. The chemical composition is in compliance with standards ISO5832-3, ASTM F1472, ASTM F2924, and ASTM F3302.

Powder Chemical Composition (wt.-%)

Element	Min.	Max.
Ti	-	-
Al	5.5	6.75
V	3.5	4.5
O	0.0	0.2
N	0.0	0.05
C	0.0	0.08
H	0.0	0.015
Fe	0.0	0.3
Y	0.0	0.005

Powder Particle Size

GENERIC PARTICLE SIZE DISTRIBUTION	20 - 80 μm

SEM micrograph of Titanium Ti64 Grade 5 powder

HEAT TREATMENT

Description

As manufactured microstructure for additively manufactured Ti64 consists of fully acicular alpha prime (α´) phase. Standard heat treatments for titanium do not necessarily produce desired microstructures due to this different starting microstructure. Heat treatment is recommended to relieve stresses and to increase ductility. Use of vacuum furnace is highly recommended to avoid the formation of alpha case on the surface of the parts.

Steps

120min (± 30 min) at 800 °C (±10 °C) measured from the part in vacuum (1.3 x 10-3 -1.3 x 10-5mbar) followed by slow cooling under vacuum or argon.
Material mechanical properties are relatively insensitive to changes in heating and cooling rates, but longer treatment times may result in decreased strength and increased elongation.
Parts heat treated according to the recommended heat treatment have a microstructure consisting of fine alpha + beta (α + β) phase.

Process Data Sheet

EOS Titanium Ti64 Grade 5 for EOS M 290 | 40 µm

EOS M 290 - 40 µm - TRL 7

Process Information Metal

This process product was developed specifically for the production of parts with high fatigue strength without the need for Hot Isostatic Pressing (HIP).

Main characteristics:

Robust production of parts in small series and series production
Improved fatigue strength compared to previous generation EOS Titanium Ti64 products
Possibility for shortened overall production time by avoiding HIP as post-process treatment step

System Setup	EOS M 290
EOS Material set	Ti64_Grade23_040_HiPerM291_100
Software Requirements	EOSPRINT 2.5 or newer EOSYSTEM 2.8 or newer
Recoater Blade	HSS (High Speed Steel)
Nozzle	EOS Grid Nozzle
Inert gas	Argon
Sieve	90 µm

Additional Information
Layer Thickness	40 µm
Volume Rate	6.2 mm³/s
Min. Wall Thickness	approx. 0.4 mm

Chemical and Physical Properties of Parts

The chemical composition of parts is in compliance with standards ASTM F136, ASTMF3001, and ASTM F3302. Composition complies with EOS Titanium Ti64 Grade 23 powder.

The areal defect percentage was determined from cross-cuts of the built parts using optical microscope fitted with a camera and analysis software. The analysis was carried out for a sample area of 15 x 15 mm. The defects were detected and analyzed with an image capture/ analysis software with an automatic histogram based filtering procedure on monochrome images. The density of the built specimen was measured according to ISO3369

Microstructure of the Produced Parts

Defects	Thickness	Result	Number of Samples
Average Defect Percentage	40 µm	0.01 %	-

Density	Thickness	Result	Number of Samples

Mechanical Properties

Mechanical Properties Heat Treated

EN ISO 6892-1 Room Temperature	Yield Strength [MPa]	Tensile Strength [MPa]	Elongation at Break A [%]	Reduction of Area Z [%]	Number of Samples
Vertical	1010	1080	15	25	-	-
Horizontal	970	1080	14	25	-	-

As manufactured microstructure for additively manufactured Ti64ELI consists of fully acicular alpha prime (α‘) phase.
Standard heat treatments for titanium do not necessarily produce desired microstructures due to this different starting microstructure.
Heat treatment is recommended to relieve stresses and to increase ductility. Use of vacuum furnace is highly recommended to avoid the formation of alpha case on the surface of the parts.

Heat Treatment Description:
120min (± 30 min) at 800 °C (± 10°C) measured from the part in vacuum (1.3x10-3-1.3x10-5 mbar) followed by cooling under vacuum or argon quenching.

Material mechanical properties are relatively insensitive to changes in heating and cooling rates, but longer treatment times may result in decreased strength and increased elongation.
Parts heat treated according to the recommended heat treatment have a microstructure consisting of fine alpha + beta (α + β) phase.

Fatigue

Heat Treated
Fatigue strength [MPa]	595

Fatigue strength at 1x10 million cycles in heat treated state Fatigue strength determines a stress level where specimen fails at a defined number of stress cycles [ISO 12107]. Fatigue strength was estimated statistically according to ISO 12107. Testing was done according to ASTM E466. Fatigue results typically show large deviations due to the nature of the fatigue process [ISO 12107].

Surface Roughness

Coefficient of Thermal Expansion

ASTM E228	Temperature
9*10^-6/K	25 – 100 ºC
9.4*10^-6/K	25 – 200 ºC
9.7*10^-6/K	25 – 300 ºC

Process Data Sheet

EOS Titanium Ti64 Grade 5 for EOS M 290 | 80 µm

EOS M 290 - 80 µm - TRL 3

Process Information Metal

This process product is optimized for faster production of parts with properties according to ASTM F1472. For most demanding applications, Hot Isostatic Pressing (HIP) is recommended to optimize high cycle fatigue properties

Main Characteristics:

Parameter set for fast and cost efficient production of Ti64 parts in small series or serial production
15 - 30 % faster than EOS Ti64 Speed (60 µm) parameter set
50 % faster than EOS Ti64 Grade 5 HiPer (40 µm) parameter set
Material fulfills ASTM F2924 mechanical requirements in heat treated state. For fatigue critical applications, HIP is recommended as post-treatment.

System Setup	EOS M 290
EOS Material set	Ti64Grade23_080_CoreM291_100
Software Requirements	EOSPRINT 2.5 or newer EOSYSTEM 2.8 or newer
Recoater Blade	HSS (High Speed Steel)
Nozzle	EOS Grid Nozzle
Inert gas	Argon
Sieve	90 µm

Additional Information
Layer Thickness	80 µm
Volume Rate	12.0 mm³/s

Chemical and Physical Properties of Parts

The chemical composition of parts is in compliance with standards ASTM F136, ASTM F3001, and ASTM F3302. Composition complies with EOS Titanium Ti64 Grade 23 powder.

Microstructure of the Produced Parts

Defects	Thickness	Result	Number of Samples
Average Defect Percentage	80 µm	< 0.1 %	-

Mechanical Properties

Mechanical Properties Heat Treated

EN ISO 6892-1 Room Temperature	Yield Strength [MPa]	Tensile Strength [MPa]	Elongation at Break A [%]	Reduction of Area Z [%]	Number of Samples
Vertical	1020	1110	15	25	-	-
Horizontal	1000	1100	15	25	-	-

Heat Treatment Description:
120min (± 30 min) at 800 °C (± 10°C) measured from the part in vacuum (1.3x10-3-1.3x10-5 mbar) followed by cooling under vacuum or argon quenching.

Elongation at break A and reduction of area Z in heat treated state: Mean values above the standard limit, some outliers below the limit.

Mechanical Properties HIP

EN ISO 6892-1 Room Temperature	Yield Strength [MPa]	Tensile Strength [MPa]	Elongation at Break A [%]	Reduction of Area Z [%]	Number of Samples
Vertical	920	1020	16	25	-	-
Horizontal	900	1010	16	25	-	-

Hardness

Fatigue

HIP
Fatigue strength [MPa]	675

High cycle fatigue strength was estimated statistically according to ISO 12107. Testing was done according to ASTM E466 with run-out limit 10⁷ cycles.

Surface roughness - Vertical


Value	9 µm
Unit	Ra

Process Data Sheet

EOS Titanium Ti64 Grade 5 for EOS M 300-4 | 40 µm

EOS M 300-4 - 40 µm - TRL 3

System Setup	EOS M 300-4
EOS Material set	Ti64Grade5_040_CoreM304
Software Requirements	EOSPRINT 2.13 or newer EOSYSTEM 2.17 or newer
Recoater Blade	HSS (High Speed Steel)
Inert gas	Argon
Sieve	90 µm

Additional Information
Layer Thickness	40 µm
Volume Rate	up to 4 x 6.2 mm³/s

Chemical and Physical Properties of Parts

The chemical composition of parts is in compliance with standards ISO5832-3, ASTM F1472, ASTM F2924, and ASTM F3302. Composition complies with EOS Titanium Ti64 Grade 5 powder.