METALS

     METALS

A material that can be in a solid or a liquid state and usually has a lot of electrical conductivity, one of the material properties. A good example of a metal it's gold. They are classified in two types ferrous and non-ferrous.

Types of Metals

1.FERROUS METALS: they contain iron. Ferrous metals can be picked up by a magnet,they are not resistant to rusting.

Some examples of ferrous metals are:

a) Cast Iron : used to make frying pans. The principal properties of cast iron are: 

- Resistance to corrosion

- Hardness

- Strength

b)Carbon Steel: used in tools. 

The proerties of carbon steel change depending on the number of carbon that contains. The general properties that nearly all share is:

- Strength and ductility (as higher is the number of carbon content the strength grows and ductility is lower.) 

-Strong metal

- Resists to compression

c)Mild Steel: used in building car bodies, gates...

It has the following properties:

- Ductile metal

- Malleable 

- It rusts quickly

d)  Stainless Steel:  This is an example of an ferrous alloy. Used for teapots, cookware...

It's properties are: 


- Resistance to water corrosion

- Resistance to rug



e) High Carbon Steel: used for hand tools.

It's properties are:

- Very strong 

- Very hard

- Very tough

2. NON-FERROUS METALS:  this are metals that doesn't have any iron at all. The general properties of non-ferrous metals are: they are not attracted to a magnet and they do not rust in the same way than ferrous metals.

Some examples of non-ferrous metals are: 


a) Aluminium: used for window frames, expensive bycicles...

The general properties of aluminium are:

- Very light

- Very light grey colour

b) Cooper: used for cookware, money...

It's properties are:

- Ductile

- Malleable

-Good conductor of electicity and heat



c) Zinc : used on steel buckets.

Zinc properties are:

- Resistant to corrosion

- Weak metal







d) Tin: used on cans.

It's properties are:

- Ductile

- Malleable

- Resistant to corrosion






e) Lead: used for batteries.

Lead properties are:

- Soft

- Malleable

-Heavy





NON-FERROUS ALLOYS:

- Brass: is a mixture of copper and zinc. Copper is the main component. Used to make musical instruments.

Properties:

- Good conductor of heat

-Resistant corrosion







- Bronze: mixture of copper and tin. Used for statues or medals.

Properties:

- Hard

- High resistance to corrosion









NEW MATERIALS ABOUT METALS:


Nanoalloys: they are used to replace platinum, wich is expensive, in fuel cells.






SOURCES OF INFORMATION:

http://www.materialsforengineering.co.uk/engineering-materials-news/nanoalloys-to-replace-pure-platinum-in-fuel-cells/155728/

14-06-17


https://es.slideshare.net/fjpwhelan/metals-ferrous-and-non-ferrous

14-06-17




http://www.stainlesssteelblog.com/2012/11/304-vs-201-stainless-steel.html

14-06-17

http://www.dictionary.com/browse/metal

14-06-17