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Glossary of terms
>
Hardness Vickers - HV
Hardness Vickers - HV
HARDNESS
Purpose
The
hardness test
is
carried out to
evaluate the
state of a metal alloy supply.
For
metal alloys, TEC Eurolab
uses the following hardness scales: Brinell,
Vickers
and Rockwell.
Description
The
hardness test
is performed by
using
an instrument called
durometer, which applies
different loads, selected,
according to
standards referring to a sample
suitably prepared; the load is
applied through an
indenter
of
different
types
depending on the
scale used.
The
hardness value
is done
by measuring
the size
of the mark
left by the
indenter
on the
sample, after having
impressed
the load
for a
controlled time
for
the Brinell
and Vickers, while the Rockwell
hardness
measures the depth
of penetration.
What is it for?
The hardness
is a
fundamental parameter to
assess the state of
supply or
the workability
of a material;
being a
non-destructive test, it
can
be performed on
finished parts
or to make
selections
on a large
scale.
On what this analysis is performed / sampling
The test is performed
on a flat surface
and parallel
to the plate
of the instrument.
The surface
must be prepared
by a
surface cleaning
and eventual
flattening
of the sample.
Reference Standards
UNI
EN
ISO
6506-1;
UNI EN ISO
6507-1; UNI
EN ISO
6508-1
previous:
Hardness Rockwell - HR
next:
Hartmann lines
Glossary of terms
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Tel:
+39 059 527775 -
Fax:
+39 059 527773 -
Email:
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