Metals and their uses part 2
- Created by: JessicaGrey
- Created on: 29-03-16 10:46
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- Metals and their uses 2
- Iron is extracted by reduction in a blast furnace.
- Contains about 96% iron. its impurities make it strong and brittle = limited uses
- Most iron is converted into steels.
- Steels are alloys - they are mixtures of iron with carbon.
- Some steels contain other metals.
- Alloys can be designed
to have properties for specific uses.
- Low carbon steel (0.4% carbon) = very easily shape
- High carbon steels (1-1.5% carbon) = very strong
- Stainless steels (iron + chromium) are resistant to corrosion
- Most metals in everyday use are alloys.
- Pure copper, gold, iron and aluminium - too soft for many uses. So are made into alloys to make them harder for everyday use
- Transition metals are good conductors of heat and electricity and can be bent or hammered into shape.
- Copper has properties that make it useful for
electrical wiring and plumbing.
- Is a good conductor of electricity and heat
- Can be bent but is hard enough to be used to make pipes or tanks
- Does not react with water.
- Aluminium and titanium have a low density and are resistant to corrosion= useful
- Iron is extracted by reduction in a blast furnace.
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