For homework: Aluminum is about 7 times more expensive than steel.
A full answer: Basically: Aluminum is more expensive. And during 2011 is expected to go higher, because of less demand. Although the price of steel is constantly on the raise. BUT, in some cases making things from steel can turn out to be more expensive. Like boats. But again, in the usual case Aluminum is more expensive.
How much more expensive depends: There are different kinds of steel.
Also, it depends on how much material you'll need. Sometimes a small amount of aluminum will suffice for a much larger amount (in weight) of steel you would need for the same task. In that case making your project from aluminum will cost less than from steel. But the raw cost of steel is still cheaper than that of aluminum. (The reason is that aluminum, although more "abundant" - meaning found more on the surface of earth, is harder and therefore more expensive to retrieve).
The most significant cost difference, is the cost of work: tools, knowledge and the price for fixing mistakes. Working with aluminum is much more expensive than steel.
In 2002 (before the price rise of steel) it was 4.2 times more expensive to make a car from aluminum, than from steel.
But then a comparison by a boat maker shows that its EASIER to work with aluminum, if you use its features to your advantage: (No need to paint submerged parts, build without bending, use standard profiles etc.) and easier to sell.
And then it depends if you need to use new material or can use scrap.
Today (March 2011) iron ore (the main part for making steel) is 4 and a half cents per pound, while aluminum is a dollar and 14 cents! 0.045 vs 1.14. That's Aluminum over 25 times more expensive than iron. (But then again, steel is about 3.5 times more expensive than iron, so aluminum is about 7.2 times more expensive now.
Please understand that a shortage (like the one during the Chinese Olympics a few years ago) can make the price of steel rocket up, and change everything. So you never know what will be. But currently, Aluminum is more expensive.
By the way, Mary Antoinette had a set of cutlery (knife, fork and spoons) from aluminum, that was at that time just discovered, and more expensive than silver.
Aluminum is not the best material for a garden trowel, while very light, it is too soft. A better material would be steel or even better stainless steel.
Aluminum is a bit more difficult to weld than steel , because of it's lower melting point. Also Aluminum takes more heat , because of it's property of absorbing and releasing the heat quicker. With the proper electrode , or rod , and amps to volt settings, along with a bit of practise , it can be quite simple . One usually has to have a faster travel speed with the filler rod or electrode.
because they make most all of the alluminum used
Aluminum does not occur in nature as a solid metal. It is produced by man in several processes which require lots of energy. These processes were not invented until the 1880's. So, until then, aluminum was scarcer than gold and therefore more expensive.
Less than $24.
Steel is a harder and more durable metal than aluminum. Therefore, steel doors are often more durable and more difficult to damage than aluminum doors.
galvanised steel is a lot more safer....... if u go by the book.... it is upto 10 times stronger than stainless steel in aluminum
Aluminum roofing may be cheaper and much more affordable than steel roofing however, steel roofing has proven to be much more reliable. It can resist different weather conditions and lasts much longer than aluminum.
If the steel contains by weight one or more of the following elements in the proportion shown, it is an alloy steel. 0.3 % or more of aluminium 0.0008 % or more of boron 0.3 % or more of cobalt 0.4 % or more of copper 0.4 % or more of lead 1.65 % or more of manganese 0.08 % or more of molybdenum 0.3% or more of nickel 0.06 % or more of niobium 0.6 % or more of silicon 0.05% or more of titanium 0.3 % or more of tungsten (wolfram) 0.05 % or more of zirconium 0.1 % or more of other elements (except sulphur, phosphorus, carbon and nitrogen), taken separately. Any steel not containing one or more of the above elements in the weight proportions shown, is a non-alloy steel.
carbon fiber costs more than steel
Aluminium is more expensive than steel
No, stainless steel never corrodes.
Aluminium is lighter than steel and much more durable
Steel. The density of steel is almost 3 times that of aluminum.
Steel and aluminum patio covers are both good options for preventing damage, however steel lasts much longer. The only problem that steel can have is rust.
If the wheels are steel, a magnet will stick. If aluminum, it will not.If the wheels are steel, a magnet will stick. If aluminum, it will not.
I would suggest that Aluminum is preferable. It is lighter than steel, which can result in a higher performance vehicle (faster acceleration, better braking, improved fuel economy). Furthermore, unlike steel, aluminum will not rust. Aluminum is also easier to recycle. Aluminum cars have a stiffer feel- giving them a sportier feel, and absorb impact about 1.5 times as well as steel, making them safer. The downside, of course, is the high cost of aluminum compared to steel.