What is the typical tensile strength range of structural steel?

The typical tensile strength range of structural steel falls between 400 to 550 MPa. This range is commonly associated with various grades of structural steel that are widely used in construction and engineering applications. Structural steel is designed to withstand significant loads and stresses, making its tensile strength a crucial factor in ensuring the safety and integrity of structures such as bridges, buildings, and machinery.

Various standards, such as those set by organizations like ASTM International, provide specifications for different grades of structural steel, and the tensile strength values within the range of 400 to 550 MPa are characteristic of commonly used structural steels, including S235 and S355 grades. These grades offer a balance of strength, ductility, and weldability, making them suitable for a variety of structural applications.

In contrast, other ranges provided by the other choices either fall below the performance needed for structural applications or represent higher-grade steels that may not be considered standard for general structural purposes. Understanding the typical tensile strength of structural steel is essential for ironworkers and engineers in selecting the appropriate materials for their projects to ensure structural stability and safety.