TMT Steel Rebar Price Guide: Yield Strength and Weight Calculations
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Yield Strength and Fe Grades
Thermo-Mechanically Treated (TMT) steel rebars are the backbone of any building foundation. Fe grades define the yield strength in Newtons per square millimeter. For instance, Fe 500 provides a yield point of 500 N/mm², while Fe 550D offers 550 N/mm².
The "D" designation stands for high ductility, specifying lower carbon percentages that allow rebars to bend without forming internal fractures. This is crucial for buildings located in seismic-prone zones like Northern and Western India.
Estimating Steel Rebar Weights
B2B steel buyers purchase rebars in tons, but site engineers calculate sizes by piece length and diameter. The standard formula to calculate rebar weight per meter is d²/162, where d is the bar diameter in millimeters.
For example, a standard 12mm rebar weighs 12² / 162 = 0.888 kg per meter. Standard bars are 12 meters long, weighing approximately 10.67 kg per piece.
Article FAQs
What is Fe 550D steel?↓
Fe 550D is a high-ductility TMT steel rebar grade with a yield strength of 550 N/mm², designed to absorb seismic energy during earthquakes.