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Salt water and acid rain speed up the rate of corrosion
(speed of rusting)
So why do we make car bodies out of steel?
Steel is cheaper than aluminium
Steel is stronger
Steel is harder
Steel is less likely to rust than iron
A car body would be lighter with aluminium but would crush
to easily
An aluminium car would not rust but would be more
expensive to buy
Other things inside a car
Material Use in cars Reason for use Why recycle?
Steel…read more

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Aluminiu Wheel hubs Does not Saves money
m rust Is non-renewable
Looks nice
Lead Car battery Conducts Reduces the
electricity dumping of toxic
Plastic Windscreen Cheap Less dumping of
Indicators Practical non biodegrable
Leather Seating Comfortable
Looks nice
Glass Windscreen Transparent Cheaper than
(see making new glass
Why aluminium does not corrode
You would expect aluminium to corrode because it is fairly
reactive, however it has a thin coating of aluminium oxide
(Al O ) which protects it
This coating…read more

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