Thermo Mechanically Treated (TMT) bars have revolutionised the industry with its superior quality as against the cold twisting process to manufacture the traditional reinforcement bars. The special heat treatment process ensures greater strength, excellent ductility, enhanced bendability and much superior weldability. The following properties of Vaishnav® Tempcore TMT are as follows:
Chemical Properties :
Grade
C% Max*
S% Max
P% Max
Mn% Min
Fe-415
0.30
0.055
0.055
0.55
Fe-500
0.30
0.055
0.055
0.60
Fe-550
0.30
0.055
0.055
0.60
Fe-600
0.30
0.040
0.040
0.90
*For guaranteed weldability, Carbon (C) content is restricted to 0.25% max.
Mechanical Properties :
Properties
Gr Fe-415 (RANGE)
Gr Fe-500 (RANGE)
Gr Fe-550 (RANGE)
Gr Fe-600 (RANGE)
0.2% Proof Test
0.30
0.055
0.055
0.55
Ultimate Tensile Strength (U.T.S.)
0.30
0.055
0.055
0.60
Elongation %
0.30
0.055
0.055
0.60
Stress Ratio
0.30
0.040
0.040
0.90
Bend & Rebend Properties :
Parameters
Size
Fe-415
Fe-500
Fe-550
Fe-600
Bend TestUltimate Tensile Strength (U.T.S.)
Upto & including 20mm
3D
4D
5D
5D
Over 20mm
4D
5D
6D
6D
Rebend Test
Upto & including 10mm
5D
5D
7D
7D
Over 10mm
7D
7D
8D
8D
» The diameter of the Mandrel for Bend & Rebend shall be as given above. » D is the nominal size of the Test Piece in mm
