Why aluminum is more expensive than iron, aluminum cans are cheaper than iron cans ?

Why is aluminum more expensive than iron?

Although the reserves of aluminum in the earth’s crust are more than iron, the production process of aluminum is much more complicated than iron, aluminum is a relatively active metal element, smelting needs to be done by electrolysis, carbon cannot be used to reduce aluminum, but carbon can be used to reduce iron. The cost of carbon reduction is significantly lower than that of electrolysis, which is extremely electricity-intensive, so the cost to be consumed in the whole production process is higher than that of iron. Therefore, aluminum is obviously more expensive than iron, so the price of aluminum is higher than iron.

Why aluminum cans are cheaper than iron cans?

Wanglaoji, eight porridge, Red Bull, etc. on the market is the use of harder iron cans, because the packaged goods are not pressure, with aluminum cans are easy to deform. Iron cans in the industry is also called three-piece cans, iron three-piece cans production process, more is first flat printing, then cut and welded into a circle, first in the can factory with the top or bottom cover, and then after filling with the corresponding bottom or top cover.

The advantages of aluminum cans are not easy to break, light weight, opaque. The general carbonated beverages on the market (cola, beer, etc.) use aluminum cans because they are not easily corroded by acid, and aluminum cans are easy to shape and relatively inexpensive to manufacture. And the pressure inside the soda is greater than the normal pressure, under the action of pressure, do not worry about deformation. And aluminum cans can ensure the pressure of carbon dioxide in the soda, so that the soda to achieve a better taste effect. So a strong and durable aluminum can is needed to prevent deformation caused by the transportation and storage process. Aluminum cans use not pure aluminum, but aluminum alloy. The domestic process, the vast majority are made of aluminum rolls after stamping, roller printing, with easy to pull the lid, the industry is also called two-piece cans.

Although the price of aluminum is relatively high, switching to aluminum cans to save costs, one is lighter than aluminum cans, so the cost of individual cans instead of decreasing The second is that aluminum cans are two-piece cans, tin cans are three-piece cans, the process of aluminum cans also save costs. As for selling scrap when the aluminum cans are worth more than tin cans, because aluminum cans are good for recycling, and tin cans are tin-plated plate, with a layer of tin on top, the average small factory does not have that process recycling.

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