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Heat Treating Terms
– A type of steel that does not require quenching to cool and harden,
simply air.
– Two or more metals combined
for desired properties, such as greater strength, hardness or a different
melting point.
– Solid iron and carbon
that is created by heating steel above its critical temperature.
– The resulting product
when austenite is quenched in a medium at a constant temperature.
– The process of
adding carbon to the surface of steel by heating the metal below its melting
point around solids, liquids or gases that contain carbon.
– The temperature
at which steel will change its structure to austenite.
– The loss of
carbon at the surface of a metal, due to high temperatures and contact
with air, oxygen or hydrogen.
– The measure
of a metal’s ability to harden after quenching.
– A metal’s ability
to resist penetration.
– A metal’s
ability to resist cracking after an impact.
– A type of steel
that results from quenching austenite.
– A prelude to many
heat treatments that involves heating a metal above its critical temperature
range and then cooling it. This process is done to erase any effects of
previous heat treating.
– A corrosion reaction
on a metal that results from exposure to oxygen in the air.
– A type of steel that
is created from the slow air cooling of austenite.
– The substance that
is used to cool a metal in the heat treating process, such as water, oil,
brine, liquid salts and air.
– The process of rapidly
cooling a red hot metal, with a medium such as water, oil or air, to influence
hardness.
– A substance’s
condition, which in most cases can be adjusted.
– The color of
clean steel at different temperatures, which indicates the level of heat
during the tempering process.
– The force
at which a metal will break after being stretched.
– The point at
which a metal will become permanently deformed after stress.
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