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Because of their unique method of manufacture, PULKIT bars possess a combination of strength and ductility that is far in excess of the minimum limits specified in the standered.

IS : 1786. In case of yield strength for PULKIT, though the standered specifies 415N/mm2 and designers use this value for design, the typical values are as high as 450N/mmsquare.For the same product, the typical value of ductility as measured by elongation is 18% minimum as against the standered value of 14.5% minimum. Undoubtedly,these superior values of strength and ductility are a guarantee of higher levels of safety.

Grade
C%(max)
Si%
S%(max)
S%(max)
P%(max)
Other%(max)
Pulkit (Fe 415)
0.28
0.60
0.15/0.35
0.050
0.050
0.28
Pulkit (Fe 500)
0.25
1.00
0.15/0.35
0.050
0.050
0.28

Grade
Yeild Strength (min) 0.2% Proof Stress
Tensile Strenght (min)
(mpa)
Elongation%
(min)
Pulkit 415
415
460
20
Pulkit 500
500
550
18

 

BOND STRENGTH

The rib pattern of PULKIT bars has been specially designed to ensure that excellent bond strength exists between the bar and the surrounding concrete. The ribs are cut by automated milling machines which produce uniform and concrete ribs.

While the specification stipulates that bond strength should be 40% higher than that of mild steel plain bars,PULKIT bars have values which are 100-200% higher than those of mild steel bars.

BENDING

The tough outer surface and core of PULKIT bars result in a rebar with excellent values of bendability. The bar can be bent around mandrels much smaller than those specified in IS 1786. This has obvious advantages at construction sites.

CORROSSION RESISTANT CHARACTERISTICS

PULKIT- TMT is produced by thermo-mechanical treatment and not by cold twisting. Therefore, there are no torsional residual stresses in the bar, which result in superior corrosion resistance characteristics compared to traditional cold twisted bars.

WELDABILITY

PULKIT- TMT due to its low carbon equivalent, has a weidability which is superior to conventional cold twisted bars. It can be butt-welded or lap-welded using ordinary rutile coated electrodes of matching strength. In manual arc welding no prewarming or post heat treatment is necessary.

DIMENSIONAL TOLERANCES

PULKIT bars are supplied with section weight lower than the nominal and within permissible parameters.