PROPERTIES & FEATURES
Bendability:
  • MONGIA STEEL ES POWER TMT Rebars have excellent bendability due to the unique micro-structure.
  • The bars can be bent to the exact angle desired by the design around mandrels unlike ordinary rebars and is much smaller in diameter than what is specified in IS: 1786, which is a genuine advantage.

Cost Effective:

  • MONGIA STEEL ES Power TMT Rebars fe600 require 15-20% less usage than ordinary Bars for same work with 5% more cost.
  • This results in an overall saving of 10 -15%.

Earthquake Resistance:

  • MONGIA STEEL ES Power TMT Rebars have high fatigue resistance to dynamic/seismic loads due to its higher ductility.
  • This makes MONGIA STEEL ES Power TMT Rebars most suitable for use in earthquake prone areas.

Weldability:

  • MONGIA STEEL ES Power TMT Rebars with carbon content less than 0.25% can be used for butt and other weld joints without reduction in strength at the joints.

High Bonding Strength:

  • MONGIA STEEL ES Power TMT Rebars with their uniform and precise rib pattern ensure better bonding strength with concrete.
  • This gives higher strength to the structure and hence a longer life.
PROCESS

Thermo Mechanically Treated (TMT) Steel Rebars go through a computerized controlled process of hardening and cooling to give it a unique double strength. The hot rolled bars are rapidly cooled by a special water spray system. During rolling the temperature of the bar is recorded at the time of entry into the mill till the finishing stand, which ensures rolling at optimum and controlled temperatures.

Atmospheric Cooling- This takes place on the automatic cooling bed where the austenitic core is transformed into a ductile ferrite-pearlite structure. Thus the final structure consists of an optimum combination of a strong outer layer(tempered martensite) with a ductile core(ferrite-pearlite). This gives MONGIA STEEL ES POWER rebars its unique combination of higher strength & ductility.

COMPARISON CHART

BIS Specification for Mechanical Properties as Per IS:1786:2008
Mechanical Properties
(Minimum)		 Fe 500D Fe 550 Fe 600 Mongia Steel
Fe500D
(Max Value)		 Mongia Steel
Fe550
(Max Value)		 Mongia Steel
Fe600
(Max Value)
0.2 percent proof
stree/yield stress-YS(N/mm2)		 500 550 600 535 570 624
% Elongation 16 10 10 18 19 17
Ultimate Tensile stress-UTS(N/mm2) 565 585 660 622 662 715
UTS/YS Ratio(N/mm2) 1.1 1.06 1.06 1.16 1.16 1.14
BIS Specification for Chemical Properties as Per IS:1786:2008
Chemical Properties
(Maximium)		 Fe 500D Fe 550 Fe 600 Mongia Steel
Fe500D
(Max Value)		 Mongia Steel
Fe550
(Max Value)		 Mongia Steel
Fe600
(Max Value)
% Carbon(C) 0.25 0.03 0.03 0.02 0.23 0.22
% Carbon Equivalent 0.42 0.42 0.42 0.29 0.32 0.31
% Sulphur(S) 0.04 0.055 0.04 0.028 0.034 0.031
%Phosphorous(P) 0.04 0.05 0.04 0.032 0.038 0.033
%Sulphur & Phosphorus 0.075 0.1 0.075 0.06 0.072 0.064

BEND PROPERTIES

NOMINAL SIZE MM MANDRAL DIAMETER FOR DIFFERENT GRADES ( IS 1786:2008)
  500D 550 600
Upto 20 mm 3Ø 5Ø 5Ø
Over 20mm 4Ø 6Ø 6Ø
Upto 10mm 5Ø 7Ø 7Ø
Upto 10mm 7Ø 8Ø 8Ø

WEIGHT TOLERANCE

SIZE OF BAR (MM2) CROSS SECTIONAL AREA ( MM2) IS 1786:2008 (ISI)     MONGIA 600 TMT BARS  
    LOWER STANDARD UPPER LOWER UPPER
8 50.3 0.367 0.395 0.723 0.372 0.417
10 78.6 0.574 0.617 0.660 0.583 0.652
12 113.1 0.844 0.888 0.932 0.852 0.911
16 201.2 1.501 1.580 1.659 1.521 1.631
20 314.3 2.396 2.470 2.544 2.418 2.517
25 491.1 3.735 3.850 3.966 3.771 3.925
28 615.3 4.685 4.830 4.975 4.733 4.441
32 804.6 6.121 6.310 6.499 6.181 6.431