Brass Powder[2]
Overview
Brass powder is a versatile metallic alloy powder primarily composed of copper (Cu) and zinc (Zn), with ratios typically ranging from 60-90% copper. It is produced through atomization or electrolysis, resulting in fine particles with a distinct golden-yellow hue. Widely utilized in industrial applications, brass powder combines the properties of its constituent metals, offering excellent malleability, corrosion resistance, and electrical conductivity. Its aesthetic appeal also makes it popular for decorative purposes.
Physical and Chemical Properties
Brass powder exhibits a density of 8.4-8.7 g/cm³, varying slightly with the copper-zinc ratio. Its melting point ranges between 900-940°C, depending on composition. The powder is insoluble in water but reacts with acids, releasing hydrogen gas. Key characteristics include high thermal and electrical conductivity, alongside antimicrobial properties due to copper content. Particle sizes typically range from 1-100 microns, with finer grades used for coatings and coarser powders for metallurgical processes.
Main Applications
In coatings, brass powder provides corrosion resistance and a metallic finish for automotive and architectural components. It is also used as a filler in conductive inks and adhesives for electronics. Metallurgical applications include brazing alloys and sintered parts manufacturing. The powder's decorative appeal drives its use in arts, crafts, and faux gold finishes. Additionally, it serves as a catalyst in certain chemical reactions.
Safety and Storage
Brass powder poses inhalation risks and may cause metal fume fever if heated. Use NIOSH-approved respirators and ensure proper ventilation during handling. Fine particles are flammable; store away from ignition sources in airtight containers. To prevent oxidation, store in a dry, cool environment with desiccants. Label containers clearly and comply with local hazardous material regulations for disposal.
B2B Procurement Guide
Industrial buyers should specify copper-zinc ratios (e.g., 70/30 or 80/20), particle size distribution (D50 value), and purity levels (typically 99%+). Bulk orders (100+ kg) often qualify for discounts. Verify supplier certifications like ISO 9001 and request material safety data sheets (MSDS). For specialized applications, consider customized alloy compositions or surface treatments (e.g., anti-oxidation coatings).
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