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METALS

METALS POST: The definition of metal is any of the elements with a positive electrical charge, typically with a shiny surface and a good conductor of heat. An example of metal is gold.
 Types of metal-There are 2 types of metal : ferrous and non-ferrous
Ferrous metals contain iron. Non-ferrous metals do not contain iron. A pure metal only consists of a single element. This means that it only has one type of atom in it. The common pure metals are:-aluminium, copper, iron, lead, zinc, tin, silver and gold.

Ferrous metals are steel, cast iron and carbon steel. Ferrous metals are not malleable,( they do not bend as easily). Some ferrous metals are very strong, long-lasting, and magnetic. These characteristics are beneficial for building or for use in certain industries. Here is a steel skeleton structure used for building houses and flats.( source: www.pixabay.com)
 

Non ferrous metals are not attracted to a magnet and they also do not rust in the same way when exposed to moisture. Some of these metals properties are malleable, ductile and conductive to heat or electricity. Non-ferrous metals include copper, aluminium, tin , zinc and brass. Copper is used to make electrical wires . Lead, a strong heavy metal is used to protect roofs on buildings.
 Copper wire: IMAGE SOURCE: www.pixabay.com






ALLOYS-Alloys are substances that contain two or more different metals and occasionally other elements.
    A ferrous alloy : COMPONENTS PROPERTIES USES
    Stainless Steel 18% chromium, and 8% Corrosion resistant Kitchen draining boards. Pipes, cutlery, aircraft.
    Non-ferrous alloys: COMPONENTS PROPERTIES USES
Aluminium alloys-
Duraluminium)		 Aluminium +4% Copper+1%Manganese Ductile, Malleable, Work Hardens. Aircraft and vehicle parts.



Brass 65% copper +35%zinc. Very corrosive, yellow in colour, tarnishes very easily. Harder than copper. Goelectrical conductor. Castings, ornaments,
door knockers



NEWS ABOUT SUPER METALS
SUPER-ALLOY: A new super alloy is the most resistant to be created. It is a combination of TITANIUM and GOLD and is going to be used for dental implants as it is so tough. Here is the link to the BBC NEWS




SUPER -CONDUCTORS-A superconductor is a special type of material that conducts electricity without resistance. Here is a video from YOUTUBE , a Canadian university project that shows how superconductors can make a train “float” or rise.

Super conductor

For information on metals I used the bbc bitesize website
http://www.bbc.co.uk/schools/gcsebitesize/design/ http://www.bbc.co.uk/schools/gcsebitesize/design/


















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