1. High precision zinc white copper strip The white cop […]
1. High precision zinc white copper strip
The white copper alloy is an alloy containing a copper-nickel alloy and zinc in different proportions, but does not contain silver. "Silver white" refers to the color of the alloy. The zinc white copper plate has a bright silver white enamel with good workability, magnetic shielding, anti-corrosion performance and high elasticity.
High-precision zinc-plated copper strips are widely used in crystal resonator housings, mobile phone shields, eyeglass frames, optical instruments, silverware, jewellery, zippers, keys, musical instruments and coins.
2. High-precision lead frame, LED lead and copper strip for IC lead frame
Three different types of alloys form the three main series of copper strips for leadframes: copper-iron-phosphorus alloys, beryllium copper-niobium alloys, and copper-chromium-zirconium alloys. The copper strip for high precision lead frame has high electrical and thermal conductivity, high strength and corrosion resistance. C194 and KFC are the two most representative of copper-iron-phosphorus alloys and are the most commonly used.
The copper strip for high-precision lead frame is the basic material for manufacturing integrated circuits, semiconductor discrete devices and LED lead holders, and is mainly used for integrated circuits, large and medium power tubes, light-emitting diodes and triodes.