W75Cu25 Electrode Wheels

W75Cu25 is a composite material composed of 75% tungsten and 25% copper; by combining the superior properties of both metals, it finds extensive application across various industrial sectors. W75Cu25 integrates tungsten's high melting point (3410°C), high hardness, high density (approximately 14.5 g/cm³), and resistance to arc erosion and adhesion, with copper's excellent electrical conductivity, thermal conductivity, and machinability. This material exhibits high strength at elevated temperatures, possesses a low coefficient of thermal expansion, and demonstrates excellent resistance to burn-off. Typically manufactured via powder metallurgy, the material is produced by blending high-purity tungsten powder with oxygen-free copper powder, followed by a refining process involving isostatic pressing, high-temperature sintering, and copper infiltration; this ensures precise compositional ratios and a dense, fine-grained microstructure.