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ALLOY STEEL – metal comprising mainly of iron and carbon
with additional alloying elements such as manganese, chromium,
or vanadium thus exhibiting excellent properties
BEND TEST
– a standard test done on reinforcing steel bars to check
its amenability to bending in structural applications
BILLET
- a semi finished product, hot rolled or forged with a maximum
cross-sectional area of 232 sq.mm.; it is normally used as the
raw material for the production of deformed reinforcing bars
DEFORMATIONS
- protrusions on a deformed bar which facilitates
and enhances its reinforcing action on concrete
DEFORMED REINFORCING
BAR (REBAR) - a steel bar, the surface of which
is provided, during hot-rolling, with lugs or protrusions called
deformations; these products are normally used for structural
purposes hence the term ‘reinforcing’.
HOT ROLLING
– metal forming by rolling done at a temperature above
the so-called recrystallization temperature (1/3 to 1/2 the melting
temperature of the metal being formed)
MECHANICAL PROPERTIES
– properties observed when a material is subjected
to an applied external force
NON-WELDABLE
DEFORMED STEEL BAR – a classified grade for deformed
steel bar; these rebars are not suitable for welding applications
due to its relatively high alloy content which increases the likelihood
of forming a brittle joint during welding
ROLLING MILL
- combines all the equipment and components needed
for producing hot or cold-rolled products; the structure that
houses rolling equipment and where actual process is done
ROLLS -
instruments for changing the shape of the steel; the forming part
of the rolls is termed as the barrel
TENSILE TEST
– a mechanical test used to evaluate the tensile
properties(e.g yield and tensile strength, ductility) of steel
TS/YS RATIO -
ratio of the ultimate tensile stress to the yield stress of the
material; this value is important in assessing the earthquake
soundness of a rebar
ULTIMATE TENSILE
STRENGTH (UTS) - the maximum stress required for
a material to rupture and break
UNIVERSAL TESTING
MACHINE (UTM) – a testing machine that may be
used to conduct tensile, compressive, bend and shear tests on
a metal
WELDABLE DEFORMED
STEEL BAR – a classified grade for deformed steel
bar; these rebars are applicable for welding purposes because
of its relatively low alloy content
WEIGHT VARIATION
TEST – a weight check to determine if a rebar
conforms to specified weight variation standard; this test may
be used to evaluate if a rebar is below a specified size (undersize)
YIELD STRENGTH
- the minimum stress required to create permanent
deformation in a metal
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