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1.1  PROPERTIES OF WOOD
1.2 PROPERTIES OF WOOD
2.1 WOOD PRODUCTS
2.2 WOOD PRODUCTS
3. METALS
4. FERROUS MATERIALS
5. NON-FERROUS MATERIALS

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·Tensile strength: It is good in the longitudial direction an poor in the transverse direction.
·Compressive strength : It is better in tranverse direction than in longitudial direction.
·Hardness this can vary a lot. It depend on the type of wood.
·Toughness : Wood is tought, so it is used to sports equipment like hokey sticks ,baseball bats

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·Thermal and electrical : Wood is a very good insulator of heat and electricity.
·Sound : This is why it id ues to meke some musical instruments.
·Colour: Different woods have different colurs.
·Density : It is lower than water that means that it float.

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-Wood is mad-made has the properties of a natural wood.
·Plywood : is formed by an odd number of thin wood.
·Chipwood : Is obtained from wood chips that are mixed with resine and then pressed.

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-Wood derivatives are usually obtained from left over wood.
· Paper : Is obtained by forming a paste out of wood and plant fibres.
·Cardboard : Is made by compressing several layers of paper.
·Cork : Is obtained from the back of the cork oak.

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- Metalic materials : They are no usually used in their pure state.Insted, they are alloyed with other metalsor no-metalic elements (like carbon). The Earth crust contain minerals, and metals are a type of these mineral.

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·Cooper : A brighjt metal, red-coloured metal that has been used since ancient times, to make coins.
·Tin : A silver-coloured shiny metal that is very resistant to corrosion .
·Aluminium : Is the third most common element of the Earth crust, it is white , shiny, cheaap, easy to recycle.
·Zinc : It is bluish-white in colour is one of the least common metals.

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·Iron : When we percentage of carbon in the alloy is less than 0,1%, we call these material iron.
It has aplication in medicine and electronic.

·Steel : Is a ferrous material made mainly from iron with 0,1% to 2% carbon.
·Cast iron : Is made from iron  and 2% to 6.67% carbon.
It is used in manufacture of engines, machine stractures, tools, manhole covers, street lights, etc.