Aluminium is a reactive metal and so is hard to extract from it's compounds without modern technology.
Aluminium is more expensive than steel
Aluminium is more expensive than Steel
Aluminium is more expensive than iron because of its lower abundance in the Earth's crust. It is also more costly to extract and refine aluminium due to the energy-intensive process of electrolysis. Additionally, aluminium has a higher demand and is used in a wide range of industries which further contributes to its higher price.
- Far more expensive than steel - Can damage easily - Weak
Because tin is more expensive than aluminium.
Aluminium is cost effective for products such as electric conduction,vessels that require hard and light metal.It is less reactive to corrosion while copper is expensive and now more expensive than aluminium.
Pure aluminium is expensive.
Aluminium has some advantages over steel. Since it has a lower density than iron or steel, a car body made from aluminium will be lighter than the same car body made from steel. This results in improved fuel economy. Also, aluminium does not corrode easily, so a car body made from aluminium will corrode less, and may last longer, than one made from steel. However, aluminium is more expensive than steel. So a car made from aluminium is likely to be more expensive than one made from steel.
Pure aluminium oxide is mixed with cryolite in electrolysis of aluminium because cryolite lowers the melting point of the mixture, making the process more energy-efficient. This allows the aluminium oxide to dissolve in the molten cryolite and conduct electricity more easily, leading to the extraction of aluminium metal from the ore.
I wasn't too sure about this but Im sure the answer is aluminium. Check you grammer: What is cheaper or what is more cheap
Overhead transmission lines use steel-cored stranded aluminium conductors. The steel supplies the necessary tensile strength, as aluminium is relatively weak. Copper is not generally used as it is significantly more expensive than aluminium.
Since you're already using concrete, not much point in using the lighter, weaker, and more expensive aluminium. And lead is really weak, environmentally hazardous and more expensive than iron.