Understanding TMT Bar Weights and Why They Matter
When planning a construction project whether a residential building, commercial structure or an infrastructure job knowing the weight of TMT (Thermo-Mechanically Treated) steel bars is critical. It allows you to estimate the quantity of steel required, calculate cost, plan logistics (handling, transport, storage) and ensure structural safety. The weights vary with the diameter of the bar; larger diameters carry significantly more weight per metre. In this blog we’ll walk you through the weights of 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, 25 mm, 32 mm, 36 mm and 40 mm steel bars as per Metro Gold Thermex’s specification , and discuss why these sizes are used, the key technical aspects and how to make best use of the information. TMT Bar Weight Table (Nominal Sizes) According to the Metro Ispat specification, here are the nominal section-weights per metre for various bar diameters: Diameter (mm) Nominal Section Weight (kg/m) Section Weight Range (kg/m) 8 mm 0.395 0.367 – 0.423 10 mm 0.617 ...