It’s malleable, ductile, magnetic and a good conductor of heat.
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What's cast iron?
Cast Iron is an alloy of iron (up to 98%) and carbon (2% to 6%)
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What is aluminium extracted from?
Bauxite
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Describe aluminium's characteristics.
It’s very lightweight, rust resistant, non-magnetic and a very good thermal and electrical conductor.
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What are some common physical properties of metals?
They are malleable and ductile
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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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Describe non-ferrous metals.
Non-ferrous metals and alloys do not contain iron and are required for components that need to be lightweight, non-magnetic and heat resistant.
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For how much metals account in the mass of the entire planet?
About 24%
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What are steel's characteristics?
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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For how much metals account among all elements?
About 2/3
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What's the most common metal?
Iron
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What's steel?
It's an alloy containing iron and other elements (up to 3%), including carbon.