portable hardness
TRANSCRIPT
Portable Hardness
Hardness is a material's resistance to
penetration.
In general, an indenter is pressed into the surface
of the material to be tested under a specific load
for a definite time interval, and a measurement is
made of the size or depth of the indentation.
Hardness properties
include such varied
attributes as resistance to
abrasives, resistance to
plastic deformation, high
modulus of elasticity, high
yield point, high
strength, absence of
elastic damping, brittleness
or lack of ductility.
Basically hardness values are arbitrary, and there
are no absolute standards for hardness
Hardness has no quantitative value, except in
terms of a given load applied in a
specific, reproducible manner and with a
specified indenter shape.
Some Hardness Testing Methods are :
Rockwell Hardness Test
Rockwell Superficial Hardness Test
Brinell Hardness Test
Vickers Hardness Test
Mohs Hardness Test
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