Precipitation hardening stainless steel
Osprey® 17-7 PH
Osprey® 17-7 PH is a precipitation hardening stainless steel for high-strength applications up to 400°C (750°F). It is typically used in chemical, oil, gas and aerospace applications.
- UNS
- S17700
- ASTM, AISI
- 631
- EN Name
- X7CrNiAl17-7
- EN Number
- 1.4568
- DIN
- X7CrNiAl17-7
Powder designed for
- Additive Manufacturing (AM)
- Metal Injection Moulding (MIM)
This 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.
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Product description
Osprey® 17-7 PH is a precipitation hardening stainless steel for high-strength applications up to 400°C (750°F). The alloy is typically used in chemical, oil, gas and aerospace applications.
This 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.
Technical data
Page updated Sep 18, 2023 9:01 AM CET (supersedes all previous editions)
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Chemical composition (nominal), %
- Fe
- Bal.
- C
- 0.09
- Cr
- 16.0-18.0
- Si
- 1.0
- Mn
- 1.0
- S
- 0.04
- P
- 0.04
- Al
- 0.75-1.50
- Ni
- 6.5-7.75
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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 micrograph of -45 +15 μm powder with spherical morphology. Data source: University of Louisville.
SEM micrographs showing smooth surface and low level of powder satellites. Data source: University of Louisville.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.
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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.
Typical particle size distributions for Additive Manufacturing.Typical particle size distributions for Additive Manufacturing 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.
Typical particle size distributions for Metal Injection Moulding (MIM)* 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.
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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.
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Packaging
A wide range of packaging options are available, from 1 kg (2.2 lb) to 200 kg (440 lb)*.
Contact our team who can support you with selecting the right packaging for your product and application.
*Some packaging options may not be available for all products due to international shipping regulations.
Disclaimer: Data and recommendations are for guidance only, and the suitability of a powder for a specific process or application can be confirmed only when we know the actual conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Osprey® powder.
Range of precipitation hardening stainless steel
| Osprey® | Standards* | Fe | C | Cr | Si | Mn | S | P | Cu | Nb | Mo | Al | Ni | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15-5 PH | UNS S1550 | Bal. | 0.07 | 14.0-15.5 | 1.0 | 1.0 | 0.04 | 0.03 | 2.5-4.5 | 0.15-0.45 | - | - | 3.5-5.5 |
15-5 PH
|
| 17-4 PH | UNS S17400 | Bal. | ≤0.07 | 15.5-17.5 | 1.0 | ≤1.0 | ≤0.04 | ≤0.03 | 3.0-5.0 | 0.15-0.45 | ≤0.3 | - | 3.0-5.0 |
17-4 PH
|
| 17-7 PH | UNS S17700 | Bal. | 0.09 | 16.0-18.0 | 1.0 | 1.0 | 0.04 | 0.04 | - | - | - | 0.75-1.50 | 6.5-7.75 | |
| PH13-8Mo | UNS S13800 | Bal. | ≤0.5 | 12.25-13.25 | ≤0.1 | ≤0.1 | ≤0.008 | ≤0.01 | - | - | 2.0-2.5 | 0.90-1.35 | 7.5-8.5 |
PH13-8Mo
|
* Information about more standards is available in the datasheet for the respective alloy.
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