Brass powder is a copper-zinc alloy powder used in powder metallurgy, friction and brake linings, functional coatings and decorative applications. Suitable brass powders are also used as a component of metallic binders in the manufacture of diamond tools.
The composition of the alloy, as well as grain size and grain shape, influence the processing and the properties of the finished product. NMD Metalpowders can help you select a grade of brass powder that is suited to your manufacturing process and requirements.
Composition, particle sizes and particle shapes
- Material type: Copper-zinc alloy, designated CuZn.
- Zinc content: For standard powder grades, approximately 10–30 %, depending on the alloy selected.
- Typical grain sizes: < 45 µm, < 63 µm and < 150 µm, depending on the model.
- Grain shapes: Often irregular in shape, or jagged or flaky.
- Optical properties: Metallic shades, the appearance of which depends on the alloy composition and particle shape.
Brass combines electrical conductivity with a wide range of mechanical and decorative properties. Its strength, formability and corrosion resistance depend on the specific alloy and its condition after processing. The required powder quality is therefore selected on the basis of its intended application.
Applications of brass powder
Powder metallurgy and sintered components
In powder metallurgy, brass powder is used to manufacture Sintered moulded parts used. Metal components with precisely tailored properties can be produced through pressing and sintering. Key factors affecting the process include, in particular, powder composition, particle size distribution, pressing behaviour and sintering conditions.
Near-net-shape manufacturing can reduce the need for subsequent machining. The level of dimensional accuracy and component density that can be achieved depends on the interplay between powder quality, the mould and process control.
Friction and brake linings
Brass powder is used as a metallic component in selected Friction and brake linings used. Within the overall formulation, it can influence friction behaviour, wear and heat transfer. The alloy composition, grain size and powder content are tailored to the requirements of the respective lining.
Thermal Spraying and Surface Coatings
Suitable grades of brass powder are used in thermal spraying, for example in flame or plasma spraying. This enables the application of metallic Surface coatings manufacture for functional or decorative purposes.
Reliable powder feeding and a particle size distribution suited to the spraying process are crucial for ensuring an even application of material. The process parameters must also be tailored to the copper-zinc alloy.
Metal-based bonds for diamond tools
In the manufacture of diamond tools, brass powder may form part of a metallic binder mixture. This matrix holds the diamond particles in place within the tool and influences how they are exposed during use. The correct balance between the binder, the diamond grit size and the material to be machined is crucial to the tool’s performance.
Metal pigments and decorative applications
Flake-shaped brass powders are used to create metallic effects in paints, varnishes and other coating systems. Particle size, orientation and alloy composition influence colour tone, gloss and opacity.
For decorative moulded parts and restoration work, suitable brass powders can also be used as metallic fillers in binder systems. The desired surface finish is determined by the choice of powder, the formulation and the post-processing.
Choose the right brass powder for your process
To ensure a targeted selection, the copper-to-zinc ratio, particle size distribution, particle shape and permissible impurity elements should be defined. Depending on the manufacturing process, flowability, bulk density, compressibility and dispersibility may also be relevant.
With our tailor-made powder solutions NMD Metalpowders helps you to align these requirements and source the appropriate grade.
Enquire about brass powder from NMD Metalpowders
You will need Brass powder for sintered components, friction linings, coatings or pigment applications?
Please let us know the intended application, the required alloy composition, grain size and quantity. You can find further materials in our Overview of metal powders.
Enquire about brass powder from NMD Metalpowders and let us advise you on the right grade of powder.
