Osprey® Ti-6Al-4V-ELI* (Grade 23) is a titanium grade alloyed with aluminium and vanadium, especially developed for Additive Manufacturing (according to ASTM F3001-14) as well as for Hot Isostatic Pressing (HIP).
The grade is characterized by high strength, very good corrosion resistance and low density. It is similar to Osprey® Ti-6Al-4V (Grade 5) but has a lower content of oxygen, nitrogen and iron, resulting in, for example, higher ductility. Osprey® Ti-6Al-4V-ELI (Grade 23) is typically used for medical implants as well as for aerospace and chemical processing applications.
Osprey® titanium powder is manufactured to the highest international quality management standards, for example, AS9100D (aerospace) and ISO 13485:2016 (medical).
*Extra low interstitials
| Ti | Al | V | Fe | O | C | N | H | Y | Other, each | Other, all |
|---|---|---|---|---|---|---|---|---|---|---|
| Bal. | 5.50-6.50 | 3.5-4.5 | ≤0.25 | ≤0.13 | ≤0.08 | ≤0.05 | ≤0.012 | ≤0.005 | ≤0.10 | ≤0.40 |
*According to ASTM F3001-14.
Trace and other elements analyzed and reported on request.
Powder characteristics and morphology
Osprey® titanium powder is manufactured by Electrode Inert Gas Atomization (EIGA), producing a powder with a spherical morphology which provides good flow characteristics, optimized depending on the application & specification requirements, and high packing density. In addition, the powder has a low oxygen and nitrogen content and low impurity levels, specifically low levels of non-metallic inclusions, resulting in a metallurgically clean product with enhanced mechanical performance.
The powder is manufactured using a state-of-the-art titanium powder plant that offers a high level of automation. This results in a powder with consistent chemistry, particle size distribution and morphology. The plant also offers a higher efficiency and capacity compared to plants using the plasma atomization process.
SEM micrographs of -63 +20 µm powder with a spherical morphology (HS Circularity 0.95), smooth surface and low level of powder satellites (magnifications x100 and x250) and a section through the powder (magnification x1000), with no visible internal porosity.
Particle size distribution
Powder for Additive Manufacturing
Osprey® metal powder for Additive Manufacturing is available in a wide range of particle size distributions that are tailored to the individual Additive Manufacturing systems. They can also be tailored to the particular requirements of the end application, both in terms of mechanical performance and surface finish.
| Process technology | Size (µm) |
|---|---|
| Binder jetting | ≤ 16, ≤ 22, ≤ 32, ≤ 38, ≤ 45 |
| Laser - Powder Bed Fusion (L-PBF) | 15 to 53 and 10 to 45 |
| Electron beam - Powder Bed Fusion (E-PBF) | 45 to 106 |
| Direct Energy Deposition (DED) | 53 to 150 |
Powder for Hot Isostatic Pressing (HIP)
Osprey® powder for Hot Isostatic Pressing (HIP) is available in a broad size range, typically <250 microns, resulting in a high packing density and tap density. Low oxygen levels, together with high packing density, also facilitate faster sintering.
Tailor-made particle size distributions are available on request. Contact us to discuss your specific requirements.
Microstructure
SEM micrographs of Osprey® TI-6AL-4V-ELI (Grade 23) Laser - Powder Bed Fusion (L-PBF) material in a heat-treated condition (solution annealed at 850 °C/1,562 °F for 2h in argon) on the left, featuring a fine lamellar and dense microstructure is identified which originates from the decomposition of martensitic α’ as expected; showing a phase transformation that gave rise to a coarser structure consisting of a α phase matrix (grey) and an interlamellar β phase (bright).
The difference in microstructure for vertical and horizontal builds is not significant. The mechanical properties of heat-treated L-PBF material are provided below. The microstructure, shown on the right, for L-PBF material after Hot Isostatic Pressing (HIP), which results in a coarsening of the grain size. The mechanical properties of HIP material are similar to that of the heat-treated material with an improvement in impact toughness, especially in the vertical direction.
SEM micrograph of Osprey® TI-6AL-4V-ELI (Grade 23) Laser - Powder Bed Fusion (L-PBF) material in a heat-treated condition, featuring ductile fracture surface.
SEM micrograph of Osprey® TI-6AL-4V-ELI (Grade 23) Hot Isostatic Pressing (HIP) material, featuring ductile fracture surface.
Mechanical properties
Typical mechanical properties of material produced by Laser - Powder Bed Fusion (L-PBF) after solution annealing at 850°C/1,562°F for 2h, followed by air cooling and a combination of solution annealing with Hot Isostatic Pressing (HIP) at 920°C/1,688°F for 2h with a pressure of 100 MPa/14.5 ksi, followed by furnace cooling.
| Condition | Direction | Yield strength (Rp0.2), MPa | Tensile strength (Rm), MPa | E-modulus, GPa | Elongation (A), % | Impact toughness, J |
|---|---|---|---|---|---|---|
| As built | Horizontal | 957 +/–7 | 1,076 +/–6 | 119 +/–2 | 14.4 +/–0.6 | 23 +/–0.5 |
| As built | Vertical | 997 +/–6 | 1,094 +/–4 | 122 +/–2 | 15.5 +/–0.5 | 22 +/–0.9 |
| HIP | Horizontal | 906 +/–2 | 1,014 +/–1 | 125 +/–3 | 17.7 +/–0.8 | 23 +/–0.7 |
| HIP | Vertical | 915 +/–8 | 1,015 +/–4 | 126 +/–3 | 17.2 +/–0.4 | 23 +/–0.8 |
| Condition | Direction | Yield strength (Rp0.2), ksi | Tensile strength (Rm), ksi | E-modulus, ksi | Elongation (A), % | Impact toughness, ft/lb |
|---|---|---|---|---|---|---|
| As built | Horizontal | 139 +/–1 | 156 +/–1 | 17,260 +/–290 | 14.4 +/–0.6 | 17.0 +/–0.4 |
| As built | Vertical | 145 +/–1 | 159 +/–1 | 17,695 +/–290 | 15.5 +/–0.5 | 16.2 +/–0.7 |
| HIP | Horizontal | 131 +/–1 | 147 +/–1 | 18,130 +/–435 | 17.7 +/–0.8 | 17.0 +/–0.5 |
| HIP | Vertical | 133 +/–1 | 147 +/–1 | 18,275 +/–435 | 17.2 +/–0.4 | 18.4 +/–0.6 |
Hardness
Typical Vickers Hardness (HV) levels (ASTM E92, ISO 6507-1, JIS Z2244, GB/T 4340.1) as well as HRC values of Osprey® TI-6AL-4V-ELI (Grade 23) material in the Laser - Powder Bed Fusion (L-PBF) heat-treated condition.
| Condition | Direction | HV | HRC |
|---|---|---|---|
| Heat treated | Horizontal | 344 +/–4 | 34 |
| Heat treated | Vertical | 346 +/–4 | 34 |
| HIP | Horizontal | 329 +/–4 | 32 |
| HIP | Vertical | 329 +/–4 | 32 |
Surface roughness
Typical surface roughness (Ra), of Osprey® TI-6AL-4V-ELI (Grade 23) in the Laser - Powder Bed Fusion (L-PBF) heat-treated condition.
| Direction | Roughness (RA), µm |
|---|---|
| Horizontal | 8.4 +/–0.9 |
| Vertical | 9.0 +/–0.2 |
High cycle fatigue at 350MPa, of Osprey® TI-6AL-4V-ELI (Grade 23) in the L-PBF heat-treated condition, at different build orientations and surface roughness conditions.
Testing
All Osprey® metal powders are supplied with a certificate of analysis containing information on the chemical composition and particle size distribution. Information on other powder characteristics is available upon request.
Packaging
A wide range of packaging options is available, from 5kgs plastic bottles to 250kg metal drums.
- 5 kg (11 lbs) Plastic bottles
- 6 kg (13 lbs) Plastic bottles
- 10 kg (22 lbs) Plastic bottles
- 20 kg (44 lbs) Metal cans
- 100 kg (220 lbs) Steel drums
- 150 kg (330 lbs) Steel drums
- 250 kg (551 lbs) Steel drums
All packaging materials are suitable for air, sea and road freight.
Contact us for more information and to discuss your packaging requirements.