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Dimensional
Elements
Eng. Moises Castro Flores
Properties of the materials
We consider the properties of a material into two categories:
mechanical and physical.
The mechanical properties, which describe how the material
responds to an applied force, include strength, stiffness and
ductility.
The physical properties including electrical, magnetic, optical,
thermal, elastic and chemical behavior depend on both the
structure and processing of a material.
Basic Properties
 Ductility.
It is a property that makes some materials under the action
of a force, may deform sustainably to create wire or wires.
 Malleability
While ductility refers to provide wires, malleability allows
obtaining thin sheets of material without breaking it. It is a
quality that lies opposite to the ductility since in most cases
both qualities are not found in the same material.
 Density
The density of a substance is an amount based on the
amount of mass contained in a given volume.
 Thermal conductivity
Quantity of heat transmitted through the thickness of a
material. Thermal conductivity is the physical property of
any material which measures the ability of heat
conduction through it.
 Electrical conductivity
Is the ability of a body to conduct electrical current, to
allow passage of charged particles.
 Hardness
Is the resistance to penetration of a harder body. The
resistance is determined by introducing a spherical body,
conical or pyramidal shape by the effect of a given force
for some time in the body to be tested.
 Tenacity
It is the resistance of a solid to break when struck. When a
substance is easily broken it is fragile and if it breaks with
difficulty we say that is tough.
 Resilience
Is equal to the external work done to deform a material to
its elastic limit.
Activity
 Tell the difference between Physical and Mechanical properties
 Tell the difference between Ductility and malleability