Powder for metal injection moulding (MIM)

Gas atomized metal powder specially designed for metal injection moulding (MIM), available in a wide range of alloys. The range of Osprey™ MIM powder includes, for example:

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  • Binary alloys
  • Cobalt alloys
  • Low-alloy steels
  • Master alloys
  • Nickel alloys
  • Stainless steels
  • Tools steels and high speed steels

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Master alloys benefits

Master alloy powders are designed to be blended with carbonyl iron powder such that the chemical composition of the final sintered components matches that of the pre-alloy equivalent.

The master alloy approach has a number of benefits; low distortion in both the green and sintered state, shorter sintering times, high sintered density and mechanical properties equivalent to wrought materials.

Powder characteristics

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 distributions

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 distribution for MIM powder (μm)*
D10 (%) D50 (%) D90 (%)
– 38 μm 5.5 13.0 31.0
– 32 μm 5.0 12.0 29.0
80% – 22 μm 4.5 11.5 27.0
90% – 22 μm 4.0 10.5 22.0
90% – 16 μm 3.5 8.0 16.0

* Particle size measurements performed using a Malvern laser particle size analyzer.

Testing

All Sandvik 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 different packaging sizes are available.
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Technical papers about the adoption of MIM technology with new products and applications development.

Metal injection moulding (MIM) offers several advantages over other production technologies.

Sandvik has over 35 years experience developing gas atomizing technology and has a philosophy of continuous improvement and close collaboration with customers.