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Sizes available : 8 to 25 mm.

Properties and features : as per IS 1786 : 1985.

  
TMT Rebars

 


Avaibility

Sizes available : 8 to 32 mm.

RAJURI THERMEX TMT-500 PROPERTIES

  1. Bend Properties
    Rajuri Thermex TMT500 rebars have excellent bend properties due to the unique ductility (elongation values) obtained when using the German HSE Thermex Technology.
  2. Corrosion Resistance properties
    Controlled water-cooling prevents the formation of coarse carbides, which has been cited as the main cause for the corrosive nature of common bar.
    Another reason for better corrosion resistance is the absence of surface stresses caused by the cold twisting (and Torsteel) process.
  3. Weldability
    Rajuri Thermex TMT500 rebars with carbon content less than 0.25% can be used for butt and other weld joints without reduction in strength at the weld joints.
  4. Fire Resistance
    Unlike Torsteel and CTD Rebars, Thermex bars have high thermal stability. They are the preferred choice when elevated temperatures of 400-600 C may be encountered (Chimneys, fires).
  5. Earthquake Resistance
    Thermex rebars have high fatigue resistance to Dynamic/ Seismic loads due to its higher ductility quality. This makes Thermex bars most suitable for use in earthquake prone areas.
  6. Formability
    Due to very high elongation values and consistent properties through out the length of bar, Thermex rebars have excellent workability and bendability.
  7. Strain Ageing
    Due to unique and scientific manufacturing process and chemical composition, Thermex rebars show no tendency of embrittlement either during welding or cold deformation of welded joints.
  8. Cost Effective
    Thermex TMT rebars required 15-20% less usage than CTD bars for same work with cost 5% more than than CTD bars. This results in overall saving of 10-25%.

 

  

 

RAURI THERMEX TMT-500 SPECIFICATIONS

Chemical Composition :    
  BIS 1786: 1985 (Fe 415) ‘R’ TMT500
Carbon ( %) Max. 0.30 0.16-0.25
Manganese (%) 0.5-1.2 0.6-1.1
Sulphur (%) Max. 0.06 0.05
Phosphorus (%) Max. 0.06 0.05
Mechanical Properties :    
 Parameter IS 1786: 1985 (Fe 500) ‘R’ TMT500
Yield Strength (min.) N/mm2 415 520-565
Tensile Strength (min.) N/mm2 485 630-730
Elongation % (min.) (A5) 14.5 16-25
 

 

Comparision : Rajuri Thermex TMT500 vs. Torsteel & CTD Fe415

 Parameter Torsteel & CTD Fe415 Rajuri Thermex
Min. Yield Strength N/mm2 415 520
Min. Tensile Strength N/mm2 485 630
Elongation % 14.5 16-25
Corrosion Rusts easily & quickly High Corrosion Registance
Weldability Poor Excellent
Use at high Temperatures - Safer
Use in Earthquake prone areas - Preferred
Consistency High variance in properties Consistancy high
Bend Properties - Superior
Savings in Steel used - 10-15%
Global Use Not permitted Preffered choice


Advantages
 


A summary of the savings by use of Rajuri Thermex – 500 bars, as per design exapmles of beams and columns as calculated by an eminent structural designer is given below:

Beams: 300 x 700 mm
Case No. Concrete Mu/bd2 Kg., Steel Fe-415 Kg., Steel
Rajuri Thermex -500		 Savings by use of
Rajuri Thermex 500
1 M-20 3.5 109.69 93.18 15.05%
2 M-25 3.2 103.73 86.50 16.61%
3 M-30 3.2 98.87 84.34 14.70%
4 M-20 4.2 162.74 141.20 13.23%
5 M-25 4.2 150.90 128.43 14.89%
6 M-30 4.2 137.14 115.24 15.96%
7 M-20 5.0 212.40 178.70 15.87%
8 M-25 5.0 207.25 165.80 20.00%
9 M-30 5.0 177.94 150.80 15.25%

Columns
Axial Loaded Columns:
Assumed: 300 x 900; Concrete M- 25; Load- 3500 KN; Unsupported Length 3.0 M,
Steel Fe 415 = 68.68 Kg; Steel Rajuri Thermex 500 = 58.0 Kg; Savings == 15.55 %
Rectangular Column with Uniaxial Bending:
Factored Load – 1200 KN; Factored Moment – 200 KN-m, Unsupported Length 3.0M,
Column Size 230 X 600; Concrete M – 25
Steel Fe 415 = 52.7 Kg; Steel Rajuri Thermex 500 = 44.4 Kg; Savings = 15.75 %
 
Why Rajuri ?

 

Spend Less Money

Rajuri 500 V/s CTD 415
Usage - 15% Less than CTD
Cost - 5 % More than CTD
Spending - 10% Less than CTD