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Copper strip is specially used for communication cable. Copper strip is equivalent to C14420 in ASTM. This copper foil, with excellent heat-exchanging performance,high softening temperature and high electric conductivity, is mainly used for communication cable . Chemical Composition Cu+Sn+Te(wt%) Te(wt%) Sn(wt%) ≥99.90 0.005-0.015 0.05-0.15 Mechanical Properties TemperTemperJISTensile Rm MPa Elongation A50 % Hardness HV SoftMO220-275≥1550-701/4 hardY41/4H240-300≥965-85HardYH330-450100-140Extra hardTEH380-510Note We can provide products with other properties according to customers` requirements. Physical Properties Density 8.9g/cm³ Electrical conductivity(20°C):min 90%IACS for annealed to temper min 80%IACS for rolled to temper Thermal conductivity(20°C): 390W/(m°C) Elastic modulus: 118000N/m Softening temperature: ≥380°C Sizes and Tolerances Thickness (mm)Thickness Tolerances (mm) Width (mm) Width Tolerances (mm) 0.03-0.06±0.00316-500±0.080.06-0.10 ±0.0050.10-0.20±0.008 Specifications available Thickness (mm) Width (mm)Temper0.03-0.06 16-240Y,T0.06-0.10 16-290Y,T0.10-0.20 16-500M,Y4,Y,TInner diameter of coil:78mm,102mm and 150mm.