AMERICAN IRON AND STEEL INSTITUTE https://www.steel.org

AMERICAN INSTITUTE OF STEEL CONSTRUCTION https://www.aisc.org

STEEL INSTITUTE OF NEW YORK https://siny.org

WORLD STEEL ASSOCIATION https://www.worldsteel.org

ENGINEERS EDGE: Elaborate catalog of structural steel shapes, sizes, dimensions easily accessed through pull down menus.

https://www.engineersedge.com/materials/aisc_structural_shapes/aisc_structural_shapes_viewer.htm