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Glossary of Terms
Base Metal: The metal or alloy that is
welded, brazed, soldered or cut.
Braze: A weld produced by heating an assembly to the
brazing temperature using a filler metal having a liquidus
above 840°F (450°C) and below the solidus of the base metals.
The filler metal is distributed between the surfaces of
the joint by capillary action.
Brazing Filler Metal: The metal that fills the
capillary joint clearance and has a liquidus above 840°F
(450°C) and below the solidus of the base material.
Capillary Action: The phenomenon by which adhesion
between the molten filler metal and the base metal (together
with surface tension of the molten filler metal) distributes
the filler metal between properly fitted surfaces of the
joint to be soldered or brazed.
Corrosion: The wearing away or dissolving of metal
caused by a chemical reaction (i.e., as water on pipes
that water contacts or chemicals touching a metal surface.)
Ductility: The capability of being hammered out thin,
as certain metals; malleable; capable of being drawn out
into wire; ability to undergo change of form without
breaking.
De-wetting: The retraction of solder on an already
wetted surface which leaves areas of incomplete coverage,
usually a result of Dip Soldering.
Eutectic: An alloy composition which exhibits the
lowest melting temperature possible within that system; has
a melting point, not a melting range.
Electrical Conductivity: Property of conducting electricity.
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