Structural Steel

Steel profiles shaped into various sections and generally used in constructions. The common shapes are as follows

1.  I section (Beam)
2.  C section (Channel)
3.  L section (Angle)
4.  T section (Tee)
5.  Square/Rectangular section (Bar)
6.  Round/Circular section (Rod)
7.  Plate
 In addition to this there are some more shapes like Hollow Structural Section (HSS), Joist, Hexagonal Section, Half Round, Oval or Elliptical, Champfer, Z-section, Asymmetrical I Section etc.

They are normally alloys of Mild Carbon Steels with Specific gravity 7.861 gm/m^3 
(density = mass / volume)