Metal Powder > Copper Alloy > C90300

C90300 20μm-63μm

C90300 a.k.a "Navy G" is a lead-free tin bronze known for its excellent strength, wear resistance, and outstanding corrosion resistance, particularly in marine environments. These properties make it ideal for use in applications such as shipbuilding, naval hardware, and underwater components like bearings, bushings, and propeller components, where durability and resistance to seawater corrosion are critical. Additionally, C90300 powder can also be used for brazing and soldering.

Powder designed for

Cold Spray

Powder Bed Fusion

Directed Energy Deposition

Binder Jetting


MPW metal powder is manufactured utilizing our DirectPowder™ process. The mechanical only, high-yield, no-melt technology maintains the microstructure and temper of the bar stock material, yielding a consistent size and shape and narrow particle size distribution.

Technical Data

  • Element Weight %

    Cu Bal.

    Pb ≤ 0.30

    Sn 7.5% - 9.0%

    Zn 3.0% - 5.0%

    Fe ≤ 0.2%

    P ≤ 0.05%

    Ni ≤ 1.0%

    Al ≤ 0.005%

    S ≤ 0.05%

    Sb ≤ 0.20%

    Si ≤ 0.005%

  • Nominal particle size: 20-63 µm. Other tailored PSDs available upon request.

  • Laser Diffraction: ASTM B822/ISO13320, Results Pending

    Apparent Density: ASTM B329, 2.8 g/cm3

    Tap Density: ASTM B527, 3.7 g/cm3

  • Material shall be packaged in UN-certified 3.6L HDPE CurTec containers. Containers shall be marked with the following: Material Designation, Batch Number, Particle Size, Quantity (kg), and Customer PO Number. Other packaging available depending on order requirements.