Copper Round Bar - C110

Copper Round Bar C110 is a solid, circular-section rod made from Electrolytic Tough Pitch (ETP) copper with a minimum purity of 99.90%. It is valued wherever high electrical or thermal conductivity must be combined with reliable strength, good ductility and straightforward fabrication. Round bar is a versatile stock form: it can be turned, drilled, threaded, forged, bent or cut into shorter parts for countless industrial and electrical components.The bars are produced by extrusion and drawing, giving a dense, uniform structure with accurate diameters and a smooth, bright surface. They are available in soft (annealed) and hard-drawn tempers and in a wide range of diameters and lengths. Production normally conforms to ASTM B187 / ASTM B133 and equivalent European standards such as EN 13601 and EN 12163 (Cu-ETP / CW004A).Material PropertiesComposition: Electrolytic Tough Pitch (ETP) copper, UNS C11000 (C110) / Cu-ETP CW004A, with a minimum copper content of 99.90%.Electrical conductivity: 100% IACS minimum in the annealed condition, the international benchmark for conductive metals.Thermal conductivity: approximately 390 W/m·K, among the highest of all engineering metals.Density: approximately 8.89 g/cm³. Melting point: approximately 1,083 °C.Corrosion resistance: excellent resistance to atmospheric exposure, fresh water and many industrial environments, developing a stable protective patina over time.Fabrication: outstanding cold-working, bending and forming behavior; can be soldered and brazed with excellent results. Welding is possible but requires care because of its oxygen content (use brazing or oxygen-free grades where gas-shielded welding is required).Typical ApplicationsGrounding rods, earthing electrodes and lightning-protection conductorsElectrical terminals, connectors, lugs, contacts and switchgear componentsRotor bars and conductors for motors and generatorsWelding electrodes, tips and resistance-welding toolingHeat-transfer components, cooling plates and induction heating partsRivets, pins, fasteners and forged or turned parts requiring high conductivityArchitectural, artistic and decorative metalworkWhy Choose C110 Copper Round BarSuperior conductivity for efficient current and heat transferExcellent cold-forming and forging characteristicsGood corrosion resistance in outdoor and underground installationsAccurate diameters and straight, clean bars that reduce machining allowance100% recyclable and available in standard lengths or cut to sizeMachining note: C110 copper is soft and gummy, so its machinability rating is low compared with free-machining brass. Use sharp tools, positive rake angles and plenty of coolant for best results, or consider a free-machining copper grade for high-volume turned parts.