Aluminum would be better at keeping the temperatures lower compared to steel.
steel
aluminum conducts heat better than stainless steel.
Stainless steel would last you much longer than aluminum. Aluminum is not as dense as steel, and may not last as long.
Fiberglass can be a bit more durable then aluminum or steel. It is also much easier to work with and looks a lot better then the others. Fiberglass grates tend to be lighter than metal grates and may offer a better load capacity depending on the type of grate. They are inherently lighter as the material is designed to be lightweight whereas aluminum and steel grates are selected for their durability and reliability.
A stainless steel flagpole is the best as there will be no corrosion problems.
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 because it has a lower density which makes it lighter
no, steel is not better conductor than aluminum due to structural differences between them.
it is steel but it could be aluminum. it's aluminum when you can tell. you can tell if the bike is really light when you do a wheelie (i wouldn't try it) or when you pick it up (better choose).
The coated steel is fine. Real aluminum would be lighter with the advantages that brings. (slightly better ride and possibly slightly better fuel economy, maybe 1 or 2 %)
Steel. The density of steel is almost 3 times that of aluminum.
You better be able to! Or you wouldn't be able to open a harder steel can.