JSW Neosteel TMT Bar Weight Chart — Fe 500D, 550D and 600

JSW Neosteel ka weight chart is one of the most searched TMT bar references on Indian construction forums, yet no single page provides the weight table, the grade comparison, and the seismic zone guidance together. This article gives you all three. The weight values below are derived from IS:1786:2008 and apply to all JSW Neosteel grades — because grade selection changes the steel's strength, not its cross-sectional area or density.

The TMT Weight Formula — Why Grade Does Not Change Weight

A 20 mm Fe 500D bar and a 20 mm Fe 500 bar have exactly the same nominal diameter, the same cross-sectional area, and therefore the same weight per metre. The difference between the grades lies in the metallurgy — the ratio of martensite in the rim versus ferrite-pearlite in the core — not in the bar's physical dimensions. This is why the weight formula is the same for every IS:1786 grade:

Formula: Weight (kg/m) = D² / 162

D

Nominal diameter of the TMT bar, in millimetres

162

Constant derived from π × ρ_steel / 4 × unit conversion, using steel density 7850 kg/m³ per IS:1786:2008

The constant 162 applies universally across all BIS-certified TMT bars — JSW Neosteel, Tata Tiscon, RINL Vizag Steel, and any other IS:1786-conforming product.

JSW Neosteel TMT Bar Weight Chart (IS:1786)

Weight calculated using D²/162 per IS:1786:2008. Standard length 12 m. Tolerance on mass: ±7% for bars up to 10 mm diameter; ±5% for bars above 10 mm per IS:1786:2008 Clause 8. Pieces per MT calculated at nominal weight for 12 m bars.

JSW Neosteel Grade Comparison — Fe 500, Fe 500D, Fe 550D and Fe 600

Minimum mechanical properties per IS:1786:2008 Table 1. The 'D' suffix (Fe 500D, Fe 550D) denotes enhanced ductility — higher elongation and tighter carbon equivalent limits. JSW Neosteel Fe 500D and Fe 550D carry BIS certification under IS:1786:2008 with CML marking.

Worked Example — High-Rise Slab in Seismic Zone III Using Fe 500D

A structural engineer in Mumbai is designing a 14-storey residential tower. The project site falls in seismic Zone III per IS:1893 (Part 1):2016, so the specification calls for JSW Neosteel Fe 500D for all slab and column reinforcement. The engineer needs to estimate the TMT tonnage for a typical floor slab using 20 mm bars.

Step 1 — Weight per bar:
Weight per metre = 20² / 162 = 400 / 162 = 2.469 kg/m
Weight per 12 m bar = 2.469 × 12 = 29.63 kg per bar

Step 2 — Why Fe 500D over Fe 500:
Fe 500D has a minimum elongation of 16% versus 12% for standard Fe 500. In seismic events, this extra ductility allows the bar to absorb more energy before fracture — a critical safety margin in Zone III and above. The weight per metre is identical for both grades, so the structural drawings do not change when upgrading from Fe 500 to Fe 500D.

Step 3 — Total order calculation:
Floor slab requires 500 bars of 20 mm, 12 m length.
Total weight = 500 × 29.63 = 14,815 kg = 14.82 MT
This fills one standard 15 MT trailer with minimal excess — an efficient procurement load.

For TMT bar weight on other diameters, or to calculate the total weight of a mixed bar schedule, use our free Metal Weight Calculator. For optimising the cut schedule to minimise offcut waste, see our Cut List Optimizer.

How Many 20 mm JSW Bars Are in One MT?

At 29.63 kg per 12 m bar, one metric tonne (1000 kg) of 20 mm JSW Neosteel Fe 500D contains exactly 33.75 bars — rounded down to 33 full bars at procurement, with the balance carried as partial credit or rounded to the nearest bundle. Most distributors supply 20 mm bars in bundles of 5 or 10, so a typical 1 MT order arrives as 3 bundles of 10 bars plus some additional bars to reach the tonne weight. Always confirm the bundle configuration with your JSW dealer before finalising the order quantity.

For a broader weight reference across brands including Tata Tiscon and Vizag Steel, our TMT bar weight per metre chart covers all major Indian producers in one table.