Comparing Aluminum and Steel: Key Differences and Applications

The video compares aluminum and steel, highlighting their differences in strength, weight, corrosion resistance, and applications. Aluminum is lightweight, conducts heat and electricity well, and is used in aircraft and power lines. Steel is stronger, used in infrastructure, and less reactive with food. Both metals have unique properties affecting their industrial and practical uses.

Why is aluminum often chosen for aircraft construction?

• It is lightweight and resistant to corrosion.

• It has a high melting point.

• It is cheaper than other metals.

• It is stronger than steel.

What element is added to steel to enhance its resistance to corrosion?

• Nickel

• Copper

• Chromium

• Manganese

Which metal is preferred for car radiators due to its heat conduction properties?

• Iron

• Copper

• Aluminum

• Stainless steel

Which metal is more challenging to weld?

• Iron

• Aluminum

• Stainless steel

• Copper

Why are high voltage overhead power lines often made of aluminum?

• It is a poor conductor of electricity.

• It is lightweight and resistant to corrosion.

• It is stronger than steel.

• It is cheaper than copper.