1. Aluminum network wire, also called copper clad aluminum network wire, aluminum or aluminum/steel alloy core surface copper core coated with an oxygen-free copper-aluminum alloy
Features: The wire is lighter and the conductivity is worse than copper. DC resistance of the copper-clad aluminum conductor is larger than that of the pure copper conductor. Resistance of 300 meters is about 72Ω, which can be transmitted for about 100 meters. Oxidation resistance is poor and the service life is short. For power supply, copper-clad aluminum conductors will result in additional power consumption and a lower voltage drop. The tensile strength of copper-clad aluminum, the construction can not pull the cable body vigorously. Advantages are cheap and good to sell.
Testing: The aluminum in the aluminum network wire is white. If it is afraid of plating, it will be scraped with a knife. It is white, it is aluminum, and it is burned with fire. If the core of the cable is softened quickly, it proves that the copper core of the cable is aluminum.
2. Zinc copper network wire, also known as brass, we often call "pure copper wire", zinc content is roughly 32% ~ 39%, and oxygen-free copper wire these two wires are generally soft material, cut shortly after seeing horizontal of cut surface, the color and the outer skin are the same.
Features: This is generally softer than the iron wire, harder than the oxygen-free copper. It is expensive but Profit of the network cable is not too high, many sellers take this as an oxygen-free copper network cable, the 0.4 copper network cable is Up to 80 meters, 0.45 copper network cable can reach 90 meters, 0.5 copper network cable can also reach 100 meters, good wire is generally only 130 ~ 150 meters.
Testing: With the blade scraping. If the internal color and the skin of the scraped have obvious color difference, then it must be zinc-copper, or even copper-plated.
3.Iron wire, also called four iron four aluminum wire,
Features: The worst quality network cable, poor transmission and poor quality, the cheapest network cable. It is easy to appear attenuation, can transmit up to 60 meters, 300 meters resistance can reach 150Ω, very hard and it is not suitable for construction, the advantage of using fire will not It will soon be soft, in short, this cannot be used;
Testing: Using a strong magnet, if attracted, it proves that the cable is iron-containing.
4. High-conductivity aluminum wire, its composition is not only containing copper and silver components, in fact, is a high-performance wire of copper, aluminum and silver alloy, usually called copper-clad silver. Divided into: copper clad aluminum network wire (in the middle is aluminum, the surface is thin oxygen-free copper layer), high-conducting aluminum network wire (imported aluminum, surface copper plating), copper-clad silver network wire (imported aluminum, full copper plating.)
Features: Small resistance and long transmission. Compared with copper, iron and aluminum mesh, the resistance is about 60Ω and can be transmitted for 150 meters. However, the oxygen resistance is poor. Under normal use environment, the life is not long and the most Can use 4-5 years
Application: Because copper-clad silver can be transmitted far away, we can generally use it in ADSL, computer room, supermarket, warehouse. In general, the network transmission will be more problematic. The high-conductance aluminum cable is faster than the copper-clad silver cable. So long, but not too far apart, it can also be applied to small and medium-sized areas such as supermarkets, warehouses, and homes.
Copper-clad aluminum wire with a short propagation speed. It can be applied to a small area such as a small supermarket, an office, etc., and there is no problem in the case of general maintenance and use.
5. oxygen-free copper network cable, just pure copper network cable, the best network cable, according to the standard, the oxygen content of the oxygen-free copper wire is not more than 0.003%, the total impurity content is not more than 0.05%, and the copper purity is greater than 99.95%.
Features: high oxygen-free copper conductivity, processing performance and welding performance, corrosion resistance and low temperature performance are good, suitable for high-quality network cable material, 300 meters resistance is about 30Ω, about 120-150 meters, signal transmission distance Far, low packet loss rate, high oxidation resistance, generally can be used for more than 10 years.
Application: It is recommended to use oxygen-free copper in network engineering, network HD monitoring project and home decoration dark line. The network stability is guaranteed, the oxidation resistance is strong, and the service life is long.