Osprey® 718 is an age-hardenable nickel-chromium superalloy characterized by high strength combined with high corrosion resistance. The alloy has reliable and consistent mechanical properties at elevated temperatures up to ~650°C/~923°F. It is typically used in jet and gas turbines and in oil and gas applications. Osprey® 718 is an alloy of the same type as Inconel® 718*.
This metal powder is manufactured by either induction melting under Vacuum Inert Gas Atomization (VIGA) or melting under argon prior to Inert Gas Atomization (IGA), producing a powder with a spherical morphology which provides good flow characteristics and high packing density. In addition, the powder has a low oxygen content and low impurity levels, resulting in a metallurgically clean product with enhanced mechanical performance.
*Inconel is a trademark owned by Huntington Alloys Corporation.
| Ni | Fe | C | Cr | Mo | Nb | Mn | Si | P | S | B | Cu | Al | Ti | Co |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50.0–55.0 | Bal. | ≤0.08 | 17.0-21.0 | 2.80-3.30 | 4.75-5.50 | ≤0.35 | ≤0.35 | ≤0.015 | ≤0.015 | ≤0.006 | ≤0.30 | 0.20-0.80 | 0.65-1.15 | ≤1.00 |
Powder manufactured by Vacuum Inert Gas Atomization typically has an oxygen and nitrogen level below <200 and 150 ppm respectively.
Powder characteristics and morphology
Powder for Additive Manufacturing
Osprey® metal powder for Additive Manufacturing is characterized by a spherical morphology and high packing density, which confer good flow properties. For powder bed processes these are essential when applying fresh powder layers to the bed to ensure uniform and consistent part build.
For blown powder processes, such as Direct Energy Deposition (DED), good flow ensures uniform build rates. Tight control of the particle size distribution also helps ensure good flowability. Low oxygen powders result in clean microstructures and low inclusion levels in the finished parts.
The powder morphology of Osprey® 718 powder, shown here for additive manufacturing, is typically spherical, with smooth surface and low level of powder satellites.
Powder for Metal Injection Moulding (MIM)
Osprey® MIM powder has a spherical morphology, resulting in high packing density. This enables the manufacture of feedstocks with high powder loading, which not only minimizes binder costs but also reduces part shrinkage during debinding and sintering. Spherical powder also has excellent flow characteristics, resulting in reduced tool wear and consistent mould filling.
Osprey® MIM powder's low oxygen content allows better control of carbon and consistency during sintering. Low oxygen levels, together with high packing density, also facilitate faster sintering.
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 Metal Injection Moulding (MIM)
Osprey® metal powder for Metal Injection Moulding (MIM) is available in a wide range of particle size distributions, from under 5 μm up to 38 μm. The table shows our standard particle size distributions for MIM powders.
| Size (μm) | D10 (μm) | D50 (μm) | D90 (μm) |
|---|---|---|---|
| ≤ 38 | 5.5 | 13.0 | 31.0 |
| ≤ 32 | 5.0 | 12.0 | 29.0 |
| 80% ≤ 22 | 4.5 | 11.5 | 27.0 |
| 90% ≤ 22 | 4.0 | 10.5 | 22.0 |
| 90% ≤ 16 | 3.5 | 8.0 | 16.0 |
* Particle size measurements performed using a Malvern laser particle size analyzer, typical D10, D50 and D90 provided.
Tailor-made particle size distributions are available on request. Contact us to discuss your specific requirements.
Mechanical properties
Typical mechanical properties of as-built and heat-treated material produced by Laser - Powder Bed Fusion (L-PBF) evaluated in room temperature. Heat treatment: solution annealed (980°C/1,796°F for 1h, air cooled) and aged (720°C/1,328°F for 8h, furnace cooled to 620°C/1,148°F for 8h and air cooled).
| Condition | Direction | Yield strength (Rp0.2), MPa | Tensile strength (Rm), MPa | E-modulus, GPa1) | Elongation (A), % | Impact toughness, J |
|---|---|---|---|---|---|---|
| As built | Horizontal | - | - | - | - | - |
| As built | Vertical | 612 | 964 | - | 34.5 | - |
| Heat treated | Horizontal | 1,217 | 1,462 | 182 | 19.4 | 16.1 |
| Heat treated | Vertical | 1,145 | 1,365 | 166 | 22.3 | 29.3 |
| Condition | Direction | Yield strength (Rp0.2), ksi | Tensile strength (Rm), ksi | E-modulus, ksi1) | Elongation (A), % | Impact toughness, J |
|---|---|---|---|---|---|---|
| As built | Horizontal | - | - | - | - | - |
| As built | Vertical | 89 | 140 | - | 34.5 | - |
| Heat treated | Horizontal | 177 | 212 | 26 | 19.4 | 16.1 |
| Heat treated | Vertical | 166 | 198 | 24 | 22.3 | 29.3 |
1) X103
Typical mechanical properties for heat-treated Osprey® 718 material produced by Laser - Powder Bed Fusion (L-PBF) evaluated at 650°C/1,202°F.
| Condition | Direction | Yield strength (Rp0.2), MPa | Tensile strength (Rm), MPa | E-modulus, GPa1) | Elongation (A), % |
|---|---|---|---|---|---|
| Heat treated | Horizontal | 908 | 1,019 | 153 | - |
| Heat treated | Vertical | 896 | 1,064 | 129 | 5.3 |
| Condition | Direction | Yield strength (Rp0.2), ksi | Tensile strength (Rm), ksi | E-modulus, ksi1) | Elongation (A), % |
|---|---|---|---|---|---|
| Heat treated2) | Horizontal | 132 | 148 | 22 | - |
| Heat treated2) | Vertical | 128 | 161 | 20 | 5.3 |
1) X103
Hardness
Typical Vickers Hardness levels (ASTM E92, ISO 6507-1, JIS Z2244, GB/T 4340.1) as well as HRC values of Osprey® 718 material in the Laser - Powder Bed Fusion (L-PBF) as-built and solution-annealed conditions.
| Condition | HV | HRC |
|---|---|---|
| As built | 317 | 33 |
| Solution annealed | 327 | 34 |
| Solution annealed and aged | 478 | 47 |
Physical properties
| Density | 8.19 g/cm³ (0.0.296 lb/in3) |
|---|---|
| Thermal conductivity | 11.4 W/mK |
| Coefficient of thermal expansion1) | 13 10-6K-1 |
| Melting range | 1,260–1,336°C (2,300–2,440°F) |
1) In the range of 0–100°C (32–212°F)
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.