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TMT bars

Metaroll TMT bars are available different sizes & grades conform to IS 1786:2008.

Sizes: Diameter 8 mm up to 32 mm

Grade: Fe 550 & Fe 550D

Certifications:

  • Each bar is certified with ISI mark.
  • Each bar is also certified with SGS (Third party Testing Team).

Features

Fe 550

Pioneer in 550 Grade of Steel
Metarolls is the first to introduce Fe 550 grade of steel in TMT.

  • Use of high grade of steel improves longevity of civil structures.
  • 10 to 12% of steel saving in structural design.
  • Higher grade means higher tensile strength that gives improved safety factor.

Fe 550D

  • LRF processed material and superior ductility helps make structures earthquake sustainable.
  • Combined levels of Sulphur & Phosphorous content are controlled up to 0.75%.
  • High UTS/YS ratio ensures high shock absorption capacity to the structure.
Chemical Properties
Element (%) IS 1786:2008 Metaroll
Grade Fe 550 Grade Fe 550D Grade Fe 550 Grade Fe 550D
Carbon (max) 0.30 0.25 0.16-0.23 0.16-0.22
Sulphur (max) 0.055 0.040 0.040 0.035
Phosphorus (p)(max) 0.055 0.040 0.050 0.035
S & P (max) 0.100 0.075 0.090 0.070
Manganese (min) - - 0.60 0.65
Mechanical Properties
Element (%) IS 1786:2008 Metaroll
Grade Fe 550 Grade Fe 550D Grade Fe 550 Grade Fe 550D
Yield Strength/ 0.2% Proof Strength (Min, N/mm²) 550 550 570-620 570-620
UTS Ultimate Tensile Strength (Min., N/mm²) 585 600 650-750 670-770
% Elongation 10 14.5 15-20 16-24
UTS /YS Ratio 1.06 1.08 1.12-1.20 1.15-1.22
Weight Tolerance
Size of bar (mm) Cross Sectional Area (mm2) IS 1786:2008 Metaroll
I.S. Lower limit I.S. Standard limit I.S. Upper Limit Per Meter Weight (Kg) Weight / Bar No. of Bars in Bundle
8 mm 50.3 0.367 0.395 0.423 0.375-0.405 4.68 17
10mm 78.6 0.574 0.617 0.660 0.580-0.620 7.2 11
12mm 113.1 0.844 0.888 0.932 0.850-0.900 10.5 8
16mm 201.2 1.501 1.580 1.659 1.520-1.600 18.7 4
20mm 314.3 2.396 2.470 2.544 2.421-2.519 29.53 3
25mm 491.1 3.735 3.850 3.966 3.773-3.927 46.2 2
32mm 804.6 6.121 6.310 6.499 6.200-6.373 75.60 1