Copper (metal) powder

Copper (metal) powder is high-purity elemental copper (Cu) in fine particulate form, typically ≥98–99.9% purity, available as reddish-brown dendritic, spherical, or irregular particles for powder metallurgy, electronics, and chemical applications.​

Identity and Composition

Chemical name: Copper metal powder.​

Atomic number/molecular weight: 29 / 63.55 g/mol.​

Grade specifications: Cu min 98–99.9%, acid insoluble ≤0.1–0.3%, hydrogen loss (oxygen content) 0.1–0.5%; particle size -45 to -325 mesh (e.g., 90% <45 μm).​

Physical Properties

Appearance: Reddish-brown powder.​

Density: 8.94 g/cm³ (bulk); apparent density 1.5–4.9 g/cm³ depending on production method.​

Melting point: 1083 °C; boiling point: 2595 °C.​

Solubility: Insoluble in water; high thermal/electrical conductivity.​

Typical Uses

Powder metallurgy for bearings, bushings, friction materials.

Electronics (conductive inks, pastes), 3D printing/additive manufacturing.

Catalysts, antifouling paints, and chemical reductions.​

Handling and Safety

Flammable solid (UN3089); pyrophoric in fine form—avoid ignition sources, store under inert atmosphere. Irritant dust; use PPE.​

For catalog purposes: “Copper metal powder, Cu ≥99%, reddish-brown, apparent density 2–4 g/cm³, -325 mesh, for metallurgy/electronics; flammable.”​