W30x108 h beam and W30x116 steel h beam are two specifications of American standard Wide Flange Beam. They are common steel sections made of carbon steel materials such as ASTM A36 or A992, and are mainly used in structural engineering such as construction, bridges, and machinery manufacturing.
W30x108 steel and W30x116 h section steel are wide-flange H-section steels in the American Institute of Steel Construction (AISC) standard: W stands for "Wide Flange"; 30 stands for the nominal depth of the steel in inches, which is approximately 30 inches (762 mm); 108 and 116 stand for the weight of the steel in pounds per foot (lb/ft), i.e. W30x108 is 108 lb/ft and W30x116 is 116 lb/ft.
W30x116 is heavier than W30x108, mainly because the thickness of the flange and web is increased, resulting in a larger cross-sectional area and stronger load-bearing capacity; the moment of inertia and section modulus of W30x116 h section beam are larger, and the bending resistance and stiffness are better than W30x108 steel h column, which is suitable for higher load scenarios.
