Osprey® 904L is a high-alloy austenitic stainless steel characterized by very good resistance to general corrosion in sulphuric, phosphoric and acetic acid as well as very good resistance to pitting corrosion and stress corrosion cracking (SCC).
Main characteristics of Osprey® 904L:
- Very good resistance to attacks in acidic environments, e.g. sulfuric, phosphoric and acetic acid
- Very good resistance to pitting in neutral chloride-bearing solutions
- Much better resistance to crevice corrosion than steels of the ASTM 304 and ASTM 316 types
- Very good resistance to stress corrosion cracking
- 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 | C | Cr | Ni | Mo | Si | Mn | S | P |
|---|---|---|---|---|---|---|---|---|
| Bal. | 0.02 | 19.0-23.0 | 23.0-28.0 | 4.0-5.0 | 1.0 | 2.0 | 0.035 | 0.045 |
Powder characteristics and morphology
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 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.
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.