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Osprey® 625

Osprey® 625 is a a solution-hardened nickel-based superalloy alloyed with molybdenum and niobium. It has very high corrosion resistance and is typically used in demanding applications with high demand on low concentrations of residul elements.

EN Name
EN Number

Powder designed for

  • Additive Manufacturing (AM)
  • Cold spray
  • Hot Isostatic Pressing (HIP)
  • Metal Injection Moulding (MIM)

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).

Technical data

Page updated Sep 18, 2023 10:37 AM CET (supersedes all previous editions)

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  • Chemical composition (nominal), %

    58.0 min
    3.15-4.15 (Nb+Ta)
  • 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® 625 powder, shown here for additive manufacturing, is typically spherical, with smooth surface and low level of powder satellites.

    Powder for Cold spray

    Osprey® metal powder for cold spray is characterized by a spherical morphology and good flow properties. Accurate control of the powder composition and particle size distribution ensure consistent performance both throughout a single batch as well as between different batches of the same alloy.

    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.

    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.

    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 Cold spray

    Osprey® metal powder for Cold spray is available in a wide range of particle size distributions, from 5 μm to 45 μm. Our standard range of Cold spray powder includes the following particle size distributions:

    • 20 to 45  µm
    • 15 to 38 µm
    • 10 to 32 µm
    • 5 to 25 µm

    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.

    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.

  • Mechanical properties

    Typical mechanical properties of as-built and heat-treated material produced by Laser - Powder Bed Fusion (L-PBF) evaluated at room temperature.

    Alternative heat treatments can be applied to optimize the mechanical properties, balancing tensile strength and elongation.

    Mechanical properties, metric units
    Condition Direction Yield strength (Rp0.2), MPa Tensile strength (Rm), MPa E-modulus, GPa1) Elongation (A), % Impact toughness, J
    As built Horizontal 664 891 144 60 -
    As built Vertical 420 915 190 46 -
    Heat treated2) Horizontal 590 945 - 44 145
    Heat treated2) Vertical 544 842 - 51 163
    Mechanical properties, imperial units
    Condition Direction Yield strength (Rp0.2), ksi Tensile strength (Rm), ksi E-modulus, ksi1) Elongation (A), % Impact toughness, ft/lb
    As built Horizontal 96 129 21 60 -
    As built Vertical 61 99 28 46 -
    Heat treated2) Horizontal 86 112 - 44 107
    Heat treated2) Vertical 79 92 - 51 120

    1) X103
    2) Heat-treated material (1,000°C/1,832°F, 1h, air cooled)


    Typical Vicker’s Hardness levels (ASTM E92, ISO 6507-1, JIS Z2244, GB/T 4340.1) as well as HRC values for Osprey® 625 Laser - Powder Bed Fusion (L-PBF) material.

    Condition HV0.5 HRC
    As built 299 31
    Solution annealed1) 238 22
    Solution annealed2) 231 21

    1) Heat-treated material (1,048°C/1,918°F, 1 hour, air cooled)
    2) Heat-treated material (1,048°C/1,918°F, 1 hour, water cooled)

  • Physical properties

    Wrought material data, typical values

    Density 8.44 g/cm3 (0.30 lb/in3)
    Thermal conductivity 9.2 W/mK to 10.7 W/mK
    Coefficient of thermal expansion1) 12.8 10-6 K-1
    Melting range 1,290–1,350 °C (2,354–2,462°F)

    1) In the range of 0–100°C (32–212°F)

  • Typical application areas

    Osprey® 625 is an extremely versatile nickel-based alloy, suitable for use in both oxidizing and reducing acidic environments. Examples are:

    • Hydrochloric acid
    • Nitric acid
    • Phosphoric acid
    • Chloride-containing environments

    The grade can also be used for a wide range of temperatures from -196 to 815°C (-321 to 1,500°F).

    Typical areas of use include hydraulic systems, heat exchangers and high-temperature applications. Some industrial examples are:

    • High-temperature aerospace
    • Chemical process industry
    • Power industry
  • 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.

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 superalloys

Osprey® Standards* Ni Fe C Cr Mo Al Ti Nb Co B Mn Si P S Other
625 UNS N06625 58.0 min ≤5.0 ≤0.1 20.0-23.0 8.0-10.0 ≤0.4 ≤0.4 3.15-4.15 (Nb+Ta) ≤1.0 - ≤0.5 ≤0.5 ≤0.015 ≤0.015 -
718 UNS N07718 50.0–55.0 Bal. ≤0.08 17.0-21.0 2.80-3.30 0.20-0.80 0.65-1.15 4.75-5.50 ≤1.00 ≤0.006 ≤0.35 ≤0.35 ≤0.015 ≤0.015 Cu ≤0.30 718
80A UNS N07080 Bal. ≤3.0 ≤0.10 18.0-21.0 - 1.0-1.8 1.8-2.7 - ≤2.0 ≤0.008 ≤1.0 ≤1.0 - ≤0.015 Cu ≤0.2, Zr ≤0.15, Pb ≤0.003 80A
713C UNS N07713 Bal. ≤2.5 0.08-0.20 12.0-14.0 3.8-5.2 5.0-6.5 0.5-1.0 1.8-2.8 - 0.05-0.15 - - - - Zr 0.05-0.15 713C
H-X UNS N06002 Bal. 18 ≤0.15 21.0 9.0 - - - 1.0 ≤0.008 ≤0.1 ≤0.1 ≤0.015 ≤0.015 W 0.7 H-X
90 UNS N07090 Bal. ≤1.5 ≤0.13 20.0 - 1.0-2.0 2.0 - 18.0 - - - - - - 90

* Information about more standards is available in the datasheet for the respective alloy.

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