|
Chemical Properties
|
| Element |
IS: 786-1985 specified
|
TMT F.e. 415
|
TMT F.e. 500
|
| Carbon % |
0.30 Max.
|
0.18 to 0.21
|
0.18 to 0.26
|
| Manganese % |
Not Specified
|
0.50 to 1.0
|
0.60 to 1.0
|
| Sulphur & Phosphorus % |
0.11 Max.
|
105 Max.
|
105 Max.
|
| Carbon Equivalent % |
0.42 Max
|
0.25 to 0.40
|
0.30 to 0.45
|
|
| |
|
Mechanical Properties
|
| Property |
IS: 1786-1985 (Fe 415) Gr.
|
TMT Bar Values
|
Fe 500 Grade
|
TMT Values
|
| 0.2% Proof Stress |
415 Min.
|
440-490
|
500 Min.
|
520-570
|
| Tensile Strength (Mpa) |
485 Min.
|
542 Min.
|
545 Min.
|
600-700
|
| Elongation% |
14.5 Min.
|
17-30
|
12 Min.
|
15-20
|
|
| |
|
Requirement for Bond
|
| Deformation and Surface Characteristics (Mean Project Area) |
| Size of TMT Bar |
IS : 1786 Specified
|
TMT Bars
|
| |
Ar Value (min.)
|
Ar Value (50% More)
|
| 8mm |
0.96 mm2/mm
|
Above 1.4 mm2/mm
|
| 10mm |
1.2 mm2/mm
|
Above 1.8 mm2/mm
|
| 12mm |
1.8 mm2/mm
|
Above 2.7 mm2/mm
|
| 16mm |
2.4 mm2/mm
|
Above 3.6 mm2/mm
|
| 20mm |
3.4 mm2/mm
|
Above 5.1 mm2/mm
|
| 25mm |
4.25 mm2/mm
|
Above 6.3 mm2/mm
|
| 28mm |
4.76 mm2/mm
|
Above 7.1 mm2/mm
|
| 32mm |
5.44 mm2/mm
|
Above 8.1 mm2/mm
|
|