Its characteristics change according to the percentage of carbon: mild steel (very high tensile strength), medium carbon steel and high carbon steel (very hard)
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15
What is brass? Where is it used?
Brass is a very malleable alloy of of copper and zinc, it is used where low friction is required, such as for gears and valves.
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10
What's the most common metal?
Iron
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15
Describe iron.
It’s malleable, ductile, magnetic and a good conductor of heat.
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15
For how much metals account among all elements?
About 2/3
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15
What's cast iron?
Cast Iron is an alloy of iron (up to 98%) and carbon (2% to 6%)
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15
For what industries are metals fit?
Automotive and metal working
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15
What's steel?
It's an alloy containing iron and other elements (up to 3%), including carbon.
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15
Describe aluminium's characteristics.
It’s very lightweight, rust resistant, non-magnetic and a very good thermal and electrical conductor.
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15
Where and why is copper used?
Copper is an element with excellent electrical conductivity and is therefore especially used in telecommunications and electrical applications.
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15
For how much metals account in the mass of the entire planet?
About 24%
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15
What are cast iron's characteristics?
It is hard and brittle and is specifically used for low-stress components (such as engine blocks).