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PROPERTIES OF MATERIALS
Transcript of PROPERTIES OF MATERIALS
Is the ability of material to change its shape when we apply forces to it, and recover its original shape when the forces stop.
Is the ability of a material to squeeze into a new shape when it is under compression forces, and to keep the new shape when the forces stop.
Is the ability of a material to strech into a new shape when it is under pulling forces, and then to keep the new shape when the forces stop.
Is the capacity to scratch other materials
The nail has got
Is the resistence that present a material
Is a relation between weight and volume.
Magnitude Symbol Unit
Kg/l or g/cm3
Is the ability of a material to let electrons flow through it.
Is the ability to let heat flow throw the material
Is the ability of a material to fill a mould
Is the ability of a material to be pushed through a hole with the desired shape.
Is the capacity of a substance to damage an organism by ingestion, inhalation or skin contact. Some substances are not toxic, but they damage the atmosphere.
Long time ago, pipes was made with
lead, but in 1800 it discover that this material was
, and them, the pipes was made with iron.
Is the capacity of a material to be used again to make another object. This isn't a property of the material, it depends how we dispose of the object
When we want the electricity to flow easily, we use
When we don´t want the electricity to flow, we use
Principal propierties of plastics:
-Resistant to corrosion.
-Low melting point.
-Degradable under ultraviolet light.
Windows made with PVC
These propierties isn't depends only on the materials, depends on the person too.