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It really depends on the purpose, Aluminum is lighter (depending on the thickness) and will not rust (Nonferrous). However Galvanised steel is cheaper normally, as it is just a coat of zinc on steel, the only problem is that if it gets scratched enough to take away the zinc coating, then it will corrode just as fast as normal steel. Both have similar enough strength though.

It mostly just depends on what you are wanting to do.

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What is the difference in thermal conductivity between aluminum and steel?

Aluminum has a higher thermal conductivity than steel. This means that aluminum is better at conducting heat compared to steel.


What is the difference in thermal conductivity between steel and aluminum?

Steel has a lower thermal conductivity compared to aluminum. This means that aluminum is better at conducting heat than steel.


Is aluminum a good ground?

From a chemical standpoint, steel is a better thermal and electrical conductor than aluminum. Practically, however, aluminum's usefulness as a conductor is limited by its ease of oxidation. Since aluminum oxide greatly diminishes the conductivity of the aluminum over time, aluminum is not very suitable for use as a conductor in practical applications.


Can Other than zinc what metals are used to prevent rusting?

Some other metals commonly used to prevent rusting include stainless steel (which contains chromium), aluminum, and galvanized steel (which is coated with a layer of zinc). Copper and nickel can also be used for certain applications.


What is more reactive steel galvanized steel or stainless steel?

It depends on the environments. If the two materials will be in contact with water or high humidity then you can have some corrosion on the galvanized steel.Stainless steel and galvanized steel can corrode. However, galvanized steel will corrode at a higher rate. Stainless steel is more corrosion resistant than galvanized steel, but in some circumstances it will also corrode.

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