What is meaning of fe 500?

Fe 500 refers to a grade of steel reinforcement bars (rebar) used in construction, where "Fe" stands for iron and "500" indicates the minimum yield strength of the steel in megapascals (MPa). Specifically, Fe 500 bars have a yield strength of 500 MPa, making them suitable for use in structures requiring high strength and durability. They are commonly used in reinforced concrete applications to enhance the tensile strength of building materials.