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Copper coil is a flat-rolled copper product wound into a continuous coil form, manufactured through hot rolling followed by cold rolling and annealing processes. It offers excellent electrical and thermal conductivity, outstanding corrosion resistance, high ductility, and good solderability, making it an essential raw material for downstream industries such as electronics, power transmission, construction, and heat exchange equipment. Common international standards include ASTM B152 (USA for copper sheet, strip, and plate), EN 1652 (Europe for general copper and copper alloy flat products), JIS H3100 (Japan for copper and copper alloy sheets, plates, and strips), and BS 2870 (UK). Typical grades include C11000 (electrolytic tough pitch copper), C12200 (phosphorus-deoxidized copper), Cu-ETP (EN equivalent to C11000), and C1100 (JIS equivalent). To compare copper coil standards across regions, search “copper coil ASTM B152 vs EN 1652 comparison”; for electrical conductivity data, use “C11000 copper coil conductivity IACS chart”; to check standard thickness and width ranges, search “copper coil common size chart ASTM”; for alloy selection guidance, use “C11000 vs C12200 copper coil application guide”.
China’s domestic standards for copper coils mainly follow GB/T 2059 (copper and copper alloy sheets, plates, and strips) and GB/T 5187 (copper and copper alloy foils). Common Chinese grades include T2 (pure copper, equivalent to C11000), TP2 (phosphorus-deoxidized copper, equivalent to C12200), TU1 (oxygen-free copper), and H62 (brass, 62% copper). Coils are available in thicknesses ranging from 0.1mm to 3.0mm for cold-rolled products, with widths typically from 100mm to 1200mm. To cross-reference Chinese grades with international equivalents, search “T2 copper coil equivalent ASTM”; for Chinese copper coil dimension tables, use “GB/T 2059 copper coil size list”; to verify mechanical property requirements, search “Chinese copper coil tensile strength elongation chart”; for a sample Chinese mill test certificate, use “China copper coil MTC example”.
Copper coils are widely used in the electronics and electrical industries (printed circuit boards, transformer windings, bus bars, and flexible flat cables), roofing and architectural applications (flashings, expansion joints, and decorative cladding), heat exchanger manufacturing (radiator fins, air conditioner condenser fins, and solar absorber plates), and industrial gaskets and washers. For electrical applications, C11000 (T2) is preferred due to its high conductivity; for applications requiring brazing or exposure to reducing atmospheres, C12200 (TP2) offers better resistance to hydrogen embrittlement. To select copper coil for transformer applications, search “copper coil for transformer winding specification”; for roofing material requirements, use “copper coil for architectural flashing ASTM B152”; to review fin stock standards for heat exchangers, search “copper fin coil for air conditioner condenser”; for electronics industry application examples, use “copper coil for flexible printed circuit board manufacturing”.
When sourcing copper coils internationally, critical parameters include grade and temper designation (annealed, quarter-hard, half-hard, full-hard), thickness and width tolerances, surface finish (mill finish, polished, tinned, or coated), coil weight and inner diameter (typically 300mm, 400mm, or 500mm), and edge condition (slit edge, rounded edge, or sheared edge). Also confirm whether the coil has been annealed for forming applications or left in cold-rolled condition for higher strength, and whether surface protection (oil coating or protective interleaving paper) is required. For dimensional tolerance standards, search “copper coil thickness tolerance ASTM B152”; to compare temper conditions for stamping applications, use “annealed vs half-hard copper coil formability”; for current international pricing trends, search “copper coil price per ton 2025”; to locate certified global suppliers, use “copper coil manufacturers Europe directory”.
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