Aluminum plate and copper are very common things in our daily life, so what's the difference between aluminum plate and copper, and what's the difference in electrical conductivity?

From the physical properties of metal, we can see that the conductivity of aluminum plate is only lower than that of copper, so it is becoming a popular trend in the world that aluminum strip replaces copper strip, which makes the raw materials of electronic products no longer rely solely on copper strip. Aluminum strip is a aluminum coil finished product obtained by rolling aluminum ingots. It can be cut into aluminum strips and strips with required width by slitting machine components according to different purposes and needs, and it is an important raw material in industry. Aluminum strip has many uses, such as aluminum-plastic composite pipe, cable, optical cable, transformer, heater, shutter and so on. The specific uses mainly include: transformer aluminum strip, transformer aluminum foil, aluminum strip for high-frequency welding hollow aluminum strip, aluminum strip for fin radiator, aluminum strip for cable, aluminum strip for stamping, aluminum strip for aluminum edge strip, etc. The main processing equipment of aluminum strip is slitting machine Group, which can be divided into required length and width according to needs. Of course, the equipment for slitting processing is universal, which can be divided into 8 series according to the different alloy elements contained in aluminum strip, but the commonly used series are 1000, 3000, 5000 and 8000 series at present.

According to different annealing states of aluminum strip, it can be divided into fully soft (O state), semi-hard (H24) and fully hard (h18). At present, commonly used belongs to the all-soft series, because all-soft is easier to stretch or bend.

Imported aluminum plates are generally superior to domestic aluminum plates in quality and performance. The imported 6061 aluminum plates sold by our company can be used to process parts and components that need good formability and high corrosion resistance but do not require high strength, such as chemical products, food industry devices and storage containers, thin-plate processed parts, deep-drawing or spinning concave vessels, welded parts, heat exchangers, printed boards, nameplates, reflective appliances, etc. Aluminum strip 3003 is mainly used to process parts that require good formability, high corrosion resistance or good weldability, or workpieces that require both these properties and higher strength than 1000 series alloys, such as tanks and tanks for transporting liquids, pressure tanks, storage devices, heat exchangers, chemical equipment, aircraft fuel tanks, oil conduits, reflectors, kitchen equipment, etc.

5052 has good formability, corrosion resistance, candle resistance, fatigue strength and moderate static strength, and is used to manufacture aircraft fuel tanks and oil pipes, as well as sheet metal parts of traffic vehicles and ships, instruments, street lamp brackets and rivets, hardware products, etc.

Relevant explanatory materials of alumina on the surface of imported aluminum plates

The rapid growth of global aluminum production needs the substantial growth of alumina. The global bauxite resources are abundant, and the mining life is as high as 250 years. However, due to the uncertainty of the market information of the rapid growth of electrolytic aluminum, the large-scale expansion projects of alumina abroad are still slow, and the market supply cannot be fully guaranteed in the past year or two, resulting in the rapid change of global alumina supply and demand. In 2003, the global alumina output reached 54,767,300 tons, with a year-on-year increase of 6.6% and consumption of 5,464. After the balance of supply and demand in the global market in that year, the surplus fell to 127,300 tons. According to the data of International Aluminum Association (IAI), in the fourth quarter of 2003, the output of alumina in the world's major alumina producing areas increased compared with the same period of last year, but the global alumina market supply was still very short in the fourth quarter of last year. From the current overall situation, with the expansion of global electrolytic aluminum production capacity, especially in China, the demand for alumina will maintain a very strong momentum.

At present, the world's alumina production capacity has become quite tight. There are nearly 30 countries producing alumina in the world, and the world's alumina smelters have used nearly 100% of the production capacity, and there is almost no idle capacity to be re-used. At this stage, no new projects have been put into production except China. The bankruptcy protection of Caesar Aluminum Factory in the early stage has made the original shortage of alumina supply even more tense. It is estimated that the shortage of alumina supply will further deteriorate in the next year or two.

Due to the shortage of imported aluminum plates in the domestic market, the price of alumina in the international market has been high. Since the beginning of 2003, the price of alumina has been rising all the way. At present, the import price of spot alumina has risen to $520-$530 per ton, while the warehouse delivery price of imported alumina for immediate delivery in China port is about RMB 5,200-5,400 per ton. Chinalco, an alumina producer in Z, China, has also raised the price of alumina to RMB 4,300, an increase of. It is estimated that the price of alumina will continue to climb in 2004-2005, possibly reaching a record of $600/ton. According to the alumina price of $500/ton, even if other factors remain unchanged, the production cost of primary aluminum is at least $1,650/ton.

The continuous rise of alumina price has made producers start to redistribute production and capacity. In the next few years, alumina production will increase rapidly. It is predicted that alumina production will increase by 22% to 68.516 million tons in 2006, in which the share of Asia's total alumina production will increase from 18% last year to 24%, while that of Australia will decrease from 27.5% to 26.2%. It is predicted that the global alumina supply will be tight.

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