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zinc

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aluminium

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tin

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copper

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they are a lot of not ferrous metals in nature,but the most useful ones are:copper,tin,aluminiumand zinc

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cast iron

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steel

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Metals are very diffcult to find in pure nature,some examples are:iron,steel and cast iron

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cork is obtained from the bark of the cork oak. It is a waterproof,lighweight material and a very good insulator of electricity,heat and soun

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cardboard is made by compressing several layers of paper while it is wet to thicken it and produce a heavier texture

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iron

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paper is obtaines by forming a paste out of wood and plant fibres(pulp) that is mashed and then pressed and dried.

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Wood derivatives  are usually obtained from leftover wood.
The most common ones are paper,cardboard and cork

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It´s obtained from wood chips that are mixed with resine and then pressed. It is avalieble is sheets of different thickness. It can be  coated with a thin plastic or natural wood veneer to enhance cxertain properties or improve its appearence. It is used for chairs and tables in school

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It´s formed by an odd numbee of thin wood layers called vemeers that are laid in alternating directions.This gives the plywood more strength, uniformity and stability.The more veneers it has , the stronger it will be .Plywod is used to make table-tennis paddles,boats,etc

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Enhances the prototipes of nayural wood and reduces it´s price,althoughit does not looks as a attractive as natural wood.the most important types of man made woods are plywood and chipboard

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ये  Handmade Cars देख कर आपके होश उड़ जायेंगे  | 5 Most Incredible Handmade Cars That Actally Exist

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Raw materials are materials taken directly from nature which we process

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Density

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Colour

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Sound conductivity

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Thermal and electrical conductivity

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a)Tensile strength(resistence to strecching)
b)Compressive strength(resistence to being crushed)
c)Flexural strength(resistence to bending)
d)Hardness
e)Toughness
f)Thermal and electrical conductivity
g)Sound conductivity
h)Colour
i)Density

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Toughness

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Hardness

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Flexural strength

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Compressive

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Tensile strength

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We prepare or refine raw matrerias to obtain natural materials

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When we process raw materials,they become processed materials

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This is the resistance of a material to being scratched or pierced.

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This is the ability of a material to be deformed.The opposite of deformability is rigidity.If a material is deformed it can be elastic or plastic

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This is the resistancenof a material to being broken when we strike it.The tools we use to strike objects and sports equipment used to hit balls

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This is the ability of a material to be pressed or rolled into a sheet.

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This is the ability of a material to be strech into a wire.