Compared with 0.35mm2 and 0.5mm2 wires, the 0.13mm2 wire will not have much difference in electrical conductivity if it is still pure copper wire, but because the copper wire is less, the mechanical properties will be much weaker. In terms of processing technology, there will be There is a very big risk. In areas such as terminal crimping, ultrasonic welding, etc., problems such as wire breakage and unreliable crimping are very likely to occur, which will greatly increase the failure rate of products. Therefore, for 0.13mm2 wires, it is necessary to pass Sn, Mg, Ag, etc. metal to enhance its mechanical properties.
Among the major OEMs, BMW models use more CuAg, and OEMs such as Volkswagen Group, Mercedes-Benz and GM have CuMg and CuSn alloy wires, and some Ford models use CCS (copper-clad steel) alloys. Due to the difference of alloy metals, the alloy price of CuSn is about 10% cheaper than that of CuMg, and the price of CuAg is more expensive than that of CuSn.