TMT Bars
TMT Bars

The production of TMT rebars involve a combination of plastic deformation of steel in austenitic stage followed by quenching and further tempering. The process controls at each critical operation ensure uniform properties in each rebar and provides the TMT rebars with a soft ferrite and pearlite fine grained core, a strong and tough tempered martensite layer imparting it with high ductility as well as strength thus making it ideal for high rises, dams, bridges, individual houses and any critical structures where high yield strength is required without compromising on the elongation properties.

The TMT rebars are conforming to the latest BIS-1786: 2008 specifications and are available in Fe 500, Fe 500D in normal, where Fe 500D grade is highly suitable for seismic prone areas.


Comparison of BMM 500D and ISI Standards

MECHANICAL PROPERTIES

BIS : 1786

BMM STANDARDS

GRADE

Fe 500D

Fe 500D

Proof / Yield strength N/mm2 (min) 500 540
Tensile strengthN/mm2 (min) 565 625
Elongation % (min) 16% 16
Total Elongation % (min) 5%
Bend Test (upto 20mm) 3D 3D
Bend Test (above 20mm) 4D 4D
Re Bend test (upto 10mm) 4D 4D
Re Bend test (above 10mm) 6D 6D

Sizes & Optimum weight of BMM TMT 500

Type

Section

BIS Standards

BMM Standards

TMT

Size in mm

Area in Cm2

Kg/mtr

Area in Cm2

Kg/mtr

8 50.3 0.395 48.54 0.381
10 78.6 0.617 75.92 0.596
12 113.1 0.888 110.32 0.866
16 201.2 1.58 196.05 1.539
20 314.3 2.47 309.43 2.429
25 491.1 3.85 483.57 3.796
32 804.6 6.31 792.23 6.219
40 1018.3 7.99 982.17 7.71

BMM TMT Broucher Click Here

FLATS

1 spring steel flats EN45, EN45A, 55 Si 7, 65 Si 7, SUP9, SUP11A

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