Structural steel

Structural steel is steel used for making construction materials in a variety of shapes. Many structural steel shapes take the form of an elongated beam having a profile of a specific cross section. Structural steel shapes, sizes, chemical composition, mechanical properties such as strengths, storage practices, etc., are regulated by standards in most industrialized countries.

Structural steel shapes, such as I-beams, have high second moments of area, so can support a high load without excessive sagging.^[1]