Osprey® 2507 is a super-duplex (austenitic-ferritic) stainless steel characterized by excellent resistance to stress corrosion cracking (SCC), very high resistance to pitting and crevice corrosion, high resistance to general corrosion and very high mechanical strength.
Main characteristics of Osprey® 2507:
- Excellent resistance to stress corrosion cracking (SCC) in chloride-bearing environments (PRE no. ∼43)
- Excellent resistance to pitting and crevice corrosion
- High resistance to general corrosion, erosion and corrosion fatigue
- Very high mechanical strength
- Good weldability
Osprey® metal powder is manufactured by 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.
| Fe | Cr | Ni | Mo | C | Si | Mn | P | S | N | Cu |
|---|---|---|---|---|---|---|---|---|---|---|
| Bal. | 25 | 7 | 4 | ≤0.030 | ≤0.8 | ≤1.2 | ≤0.025 | ≤0.015 | 0.3 | 0.5 |
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.
SEM micrographs of Osprey® 2507 metal powder
-53 +15 µm powder with a spherical morphology,
Smooth surface and low level of powder satellites.
Powder in cross-section, in back scatted electron mode, highlighting the fine cellular structure.
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.
Powder for Hot Isostatic Pressing (HIP)
Osprey® HIP powder has a spherical morphology, resulting in 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.
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.
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
A suitable heat treatment is carried out on the as-built parts in order to achieve the desired austenitic and ferritic microstructure in the final parts. Typically solution annealing between 1,040–1,110 °C (1,904–2,030 °F) followed by air or water cooling is performed.
Micrographs of Osprey® 2507
As-built vertical section of the test specimen with near full dense part with 99.9% + relative density.
EBSD image indicating phase balance and microstructure in the material after suitable heat treatment.
Mechanical properties
Typical mechanical properties of material produced by Laser - Powder Bed Fusion (L-PBF) in heat-treated condition.
| Direction | Temperature (T), °C | Yield strength (Rp0.2), MPa | Tensile strength (Rm), MPa | E-modulus, GPa | Elongation (A), % |
|---|---|---|---|---|---|
| Horizontal | 20 | 627 | 956 | 207 | 39 |
| Vertical | 20 | 626 | 923 | 202 | 43 |
| Horizontal | 100 | 548 | 878 | 205 | 33 |
| Vertical | 100 | 546 | 854 | 205 | 36 |
| Horizontal | 200 | 505 | 823 | 196 | 30 |
| Vertical | 200 | 504 | 797 | 195 | 31 |
| Horizontal | 300 | 517 | 857 | 190 | 30 |
| Vertical | 300 | 505 | 832 | 190 | 31 |
| Direction | Temperature (T), °F | Yield strength (Rp0.2), ksi | Tensile strength (Rm), ksi | E-modulus, ksi | Elongation (A), % |
|---|---|---|---|---|---|
| Horizontal | 68 | 90 | 138 | 30 | 39 |
| Vertical | 68 | 90 | 133 | 29 | 43 |
| Horizontal | 212 | 79 | 127 | 30 | 33 |
| Vertical | 212 | 79 | 123 | 30 | 36 |
| Horizontal | 392 | 73 | 119 | 28 | 30 |
| Vertical | 392 | 73 | 116 | 28 | 31 |
| Horizontal | 572 | 74 | 124 | 28 | 30 |
| Vertical | 572 | 73 | 121 | 28 | 31 |
| Direction | Temperature (T), °C | Impact energy (W), J |
|---|---|---|
| Horizontal | –50 | 198 |
| Vertical | –50 | 235 |
| Horizontal | 0 | 237 |
| Vertical | 0 | 250 |
| Horizontal | 20 | 242 |
| Vertical | 20 | 247 |
| Horizontal | 50 | 248 |
| Vertical | 50 | 263 |
| Direction | Temperature (T), °F | Impact energy (W), Ft-lb |
|---|---|---|
| Horizontal | –58 | 146 |
| Vertical | –58 | 173 |
| Horizontal | 32 | 174 |
| Vertical | 32 | 184 |
| Horizontal | 68 | 178 |
| Vertical | 68 | 182 |
| Horizontal | 122 | 182 |
| Vertical | 122 | 194 |
Hardness
Typical Vickers Hardness (HV) levels (ASTM E92, ISO 6507-1, JIS Z2244, GB/T 4340.1) as well as HRC values, in the Laser - Powder Bed Fusion (L-PBF) heat-treated condition.
| HV | HRC |
|---|---|
| 282 +/–8 | 29 +/–1 |
Surface roughness
Measured surface roughness values (ISO 25178-6, ISO25178-606, DIN EN ISO 4287, ISO 4288), Laser - Powder Bed Fusion (L-PBF) heat-treated and
blasted condition.
| Ra, µm | Rz, µm | Sa, µm |
|---|---|---|
| 1.6 | 7.02 | 4.8 |
Corrosion properties
Corrosion properties tested on the bulk material as per the ASTM G48 and ASTM G150 standards.
| Standard | Temperature (T), °C | Temperature (T), °F |
|---|---|---|
| ASTM G48 | 90 | 194 |
| ASTM G150 | >95 | >203 |
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.
Typical application areas
Osprey® 2507 powder is typically used in the following areas:
- Oil and gas industry
- Pulp and paper industry
- Chemical industry
- Refineries and petrochemical plants
- On-shore and off-shore industry
Impellar and rotor prototype.