Replacement of aluminum with other metals
[China Aluminum Network] The substitution of aluminum for other metals is mainly manifested in the following areas:
1. Aluminum is an alternative to copper. The inadequacy of the aluminum wire to replace the copper wire is that the conductivity and safety are slightly inferior to copper, so the copper wire has always played a leading role in the wire and cable field. If the copper-aluminum spread is kept at a normal level, the industry tends to use copper as a conductor. However, under the current situation where the LME price per ton of copper and aluminum has exceeded US$1,200, and China has already surpassed RMB12,000, the use of aluminum conductors instead of copper conductors is economically very profitable. In fact, because aluminum weighs only half as much as copper, even if the price of copper and aluminum is the same, aluminum will still appear to be much cheaper than copper by weight.
2. Aluminum is an alternative to stainless steel. As the price of nickel climbed sharply, the price of stainless steel has also increased not much in the past two years. The use of stainless steel as a raw material has led to a sharp increase in the cost of raw materials for the production of household appliances, utensils, etc., and the price of finished products is difficult to increase accordingly. Although the appearance of aluminum is not as good as that of stainless steel, it is still superior to ordinary steel materials in terms of corrosion resistance and appearance, and the price is relatively superior to stainless steel. The use of aluminum or aluminum alloys to replace or partially replace stainless steel, although slightly inferior in the performance and appearance of the finished product, is economically very cost-effective and easier for consumers to accept.
3. Aluminum is an alternative to steel. Aluminum and aluminum alloys have low density and high strength and can replace steel in some industrial sectors. For some of the world's small metal products processing companies, you can buy a relatively small amount of aluminum strip, instead of galvanized steel. Aluminum can also replace ordinary steel in some ways, such as welded tubes, car hoods, and lids.
4. The use of aluminum instead of other metal materials has become the preferred lightweight for today's automotive industry. The main direction of the development of the world's automotive materials technology is lightweight and environmental protection. Reducing the quality of automobiles is one of the more effective measures to reduce vehicle emissions and increase fuel efficiency. It is estimated that every 10% reduction in the vehicle's own quality, fuel consumption can be reduced by 6% to 8%. At present, the quality of foreign cars has been reduced by 20% to 26% compared with the past. It is expected that in the next 10 years, the quality of the car itself will continue to reduce by 20%. Therefore, the development and application of new lightweight materials will continue to be a hot spot for automotive materials, and aluminum and its alloys are currently a better choice for the automotive industry.
The substitution of aluminum for other metals will promote the growth of global aluminum consumption. It is estimated that the replacement of copper conductors by aluminum wires alone will increase global aluminum consumption by more than 200,000 tons. If the amount of aluminum used in each car is increased from the current 115 kg to 130 kg, then the new cars each year in the world will consume millions of tons of aluminum in terms of tens of millions of vehicles. If you consider the alternatives of aluminum and aluminum alloys to other metals in construction, decoration, household appliances, utensils, stainless steel, etc.
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