Having some sort of an understanding about the different TMT bars is very important. They are the foundation for any construction work. No project is complete without the use of different TMT bars. Having a clear understanding about the different kinds of TMT bars is very important since it helps make your project better. TMT is a type of steel that has several different variations. These variations are for different purposes. These variations all help build projects. Fe 415 grade This is a relatively cheaper version of the TMT bars . The speciality about this bar is that it can be bent into complex shapes and structures. It is perfect for small scale and small load construction. It is used mostly in residential areas or houses. Due to their elongation and bending properties, they are used dominantly in areas prone to earthquakes. This is one of the most used TMT bars for small scale construction. They are very strong and very suited for earthquake-prone regions....
There are 4 main grades Fe 415, Fe 500, Fe 550, & Fe 600 . According to the IS: 1786 both Fe 500 and Fe 500D are grade TMT steel bars are best for the construction of commercial buildings in India. Let’s decode the grades. ‘Fe’ means the iron. TMT bars are made of iron. “500” indicates the minimum yield stress is 500Nm/mm². “D” in Fe 500 D indicates the ductility. That means these steel bars have a higher percentage of elongation or seismic resistance. Fe 500D and Fe 500 has enhanced specified minimum percentage elongation of 16% and 12% respectively. So, Fe 500 D is more suitable for construction in earthquake zones 3, 4 & 5. Tensile strength(Min) for Fe 500 is 545 N/mm² and for Fe 500D it is 565 N/ mm². Always ensure that the TMT bar you are buying has corrosion-resistance and a water protection coating.