MATERIAL PROPERTIES

heat flows through a given material
1. PHYSICAL PROPERTIES
2. MECHANICAL PROPERTIES
3. CHEMICAL PROPERTIES
Thermal conductivity - rate at which
(W/m K).

In other words, it is the ability of the
material to transfer heat through the
PHYSICAL PROPERTIES
process of conduction.
1. Color
BOILING POINT VS MELTING POINT
2. Specific Heat

3. Density
which a solid begins to liquify.
4. Thermal Conductivity
5. Electrical Conductivity

pressure of the liquid equals the

Color - light wave length

Specific heat – the heat required to
raise the temperature of one gram of as
substance by one degree centigrade
pressure surrounding the liquid and
the liquid changes into a vapour.

material.
Density - mass per unit volume
expressed d in such units as kg/cm³
D = m/v.
-
Conductors, such as copper, other
metal s have a high electrical
The mass of atoms, their size, and how
conductivity and therefore can easily
they are arranged determine the
have electrons pass through them.
density of a substance.

Electrical conductivity is the ability
of electric current to flow through a
(J/k g K)

Boiling point of a substance is the
temperature at which the vapour
6. Melting

Melting point - a temperature at
MECHANICAL PROPERTIES
Objects with the same volume but
different mass have different densities.
1. Tensile Strength
2. Ductility
DENSITY OF DIFFERENT SUBSTANCES:
3. Malleability
4. Brittleness
5. Elasticity
6. Plasticity
7. Toughness
8. Hardness
9. Machinability
1. Tensile strength - measures the force
6. Plasticity - The property of a material that
required to pull something such as rope, wire
does not returns to its original shape after
or a structural beam to the point where it
removal of stress.
breaks
7. Toughness – the ability of a material to
2. Ductility - A ductile substance can be
absorb energy and plastically deform without
drawn into a wire.
fracturing.
It is a physical property of a material
8. Hardness – the property of being rigid and
associated with th e ability to be stretched
resistant to pressure, not easily scratched.
into wire without breaking Examples: Most
metals are good examples of ductile
materials, including gold, silver, copper,
9. Machinability – the property of a material
that can be shaped by hammering, pressing,
rolling.
erbium, terbium, and samarium.
3. Malleability is a substance's ability to
deform
under
pressure
(compressive
CHEMICAL PROPERTIES
stress).
1. Corrosion resistance – a material’s
If malleable, a material may be flattened into
ability to resist deterioration caused by
thin sheets by hammering or rolling.
exposure in an environment.
Examples of malleable metals are gold, iron,
2. Errosion resistance – a material being
aluminum, copper, silver, and lead.
eroded by wind, water, or other natural
agents.
4. Brittleness - It is the ability of a material
when subjected to stress, it breaks without
significant plastic deformation
Brittle materials absorb relatively little energy
prior to fracture, even those of high strength.
5.Elasticity - The property of a material that
re turns to its original shape after removal of
stress.