TMT Bars comes in different Diameters
8mm | 10mm | 12mm | 16mm |20mm | 25mm |32mm
Best Grade of TMT Bar
TMT Bar manufactured in different grades. The grade denotes yield strength of TMT Bar. The grade starts from Fe 415 and goes up to Fe 600.
Yield Strength & Ductility is inversely proportionate in TMT Bars. For an example If you buy Fe 600 TMT Bars you will get higher strength but it is lesser ductile. Then which grade of TMT Steel Bars is best for every construction?
Fe-500
Fe-500 grade steel bars can yield minimum stress of 500 N/mm2. These bars can bend easily as they are produced under regulated manufacturing processes. These bars have easy bendability,
resistance to rust, and an unmatched welding strength. Fe-500 can give 20% cost savings as compared to FE-415 due to its superior structural strength. Usage of Fe-500 results in lesser number of TMT Bars required to hold the structure as compared to Fe-415.
Fe-500 D
One of the best TMT bars available today, the Fe-500 D grade bars have an ability to yield a minimum stress of 500 N/mm2 and possess a high percentage of elongation. ‘D’ in Fe-500 D grade denotes ductility.
This property helps these bars to preserve steel and resist earthquake shocks.
Fe-550
Similar to Fe-500, TMT bars of this grade differ by providing a yield of 550 N/mm2, and are actively used in construction projects based in marine, coastal, or underground environments. Fe-550
can give 10% cost savings as compared to Fe-500 due to its superior structural strength. Lesser number of Fe-550 TMT bars are required to hold the structure as compared to Fe-500.
CHEMICAL PROPERTIES (IS 1786:2008)
|
ELEMENTS (Maximum%) |
Fe-500 |
Fe-500 D |
Fe-550 |
Fe-550 D |
|
Carbon% |
0.30 |
0.25 |
0.30 |
0.25 |
|
Sulphur% |
0.055 |
0.040 |
0.055 |
0.040 |
|
Phosphorus% |
0.055 |
0.040 |
0.050 |
0.040 |
|
Sulphur and phosphorus% |
0.105 |
0.075 |
0.100 |
0.075 |
MECHANICAL PROPERTIES (IS 1786:2008)
|
PROPERTY |
Fe-500 |
Fe-500 D |
Fe-550 |
Fe-550 D |
|
Yield strength (N/mm2) |
500 |
500 |
550 |
550 |
|
Ultimate Tensile Strength, Min (N/mm2) |
545 |
565 |
585 |
600 |
|
Elongation Min (%) |
12 |
16 |
10 |
14.5 |