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T&C :
Threaded and Coupled.
TBE :
Threaded Both Ends.
TEMPER CARBON :
Graphite produced by heating at a temperature below the melting point.
TEMPERING (also termed drawing) :
Reheating, after hardening to some temperature below the critical temperature range followed by any rate of cooling.
Note a
— Although the terms “tempering" and "drawing" are practically synonymous as used in commercial practice, the term "tempering" is preferred.
Note b
— Tempering meaning the operation of hardening followed by reheating IS a usage which is illogical and confusing in the present state of the art of heat treating and should be discouraged.
TEMPERING OR DRAWING :
This process is applied to relieve stresses due to hardening and to adjust the hardness to the value desired. The hardened steel is reheated to a temperature below the lower critical range and is then permitted to cool.
TENSILE STRENGTH :
The maximum load, per unit of original cross-sectional area, a material in tension is capable of withstanding before complete failure or rupture. As known as ultimate tensile strength.
TERNARY ALLOY :
Alloy having three principal elements.
TOUGHNESS :
Property of absorbing considerable energy before fracture; usually represented by the area under a stress-strain curve, and therefore involving both ductility and strength.
TURN :
A work shift in the mill of usually 8 hours duration.
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