What are the different grades of iron TMT bars and their uses? Answer: Iron TMT bars are classified into different grades based on their strength and elongation properties. The common grades are Fe 415, Fe 500, Fe 550, and Fe 600. Fe 415 is suitable for small-scale construction and residential buildings, Fe 500 is widely used for various construction purposes due to its balance of st... https://bit.ly/3KV51a1