Aluminum I Beam Size Calculator has been developed to show basic
dimensions and sectional properties of extruded Aluminum Association I beam.
Standard aluminum I Beam is a structural shape which is fabricated
with extrusion. Top and bottom plates of a I Beam are named as flanges and the
vertical plate which connects the flanges is named as web. Due to its shape, I beam has high moment of inertia and stiffness
which makes it resistant to bending moments. The web provides resistance
against shear forces. These beams are not resistant to torsional loading
(twisting) and they shall not used in the cases where torsion is dominant.
Structural sections are available in
6061-T6 aluminum alloy which has good corrosion resistance and material strength.
Designation system for aluminum alloys: The designation system was established by The Aluminum Association.
A four digit number is assigned to each aluminum alloy. (Ex: 6xxx)
6xxx: Alloys which contain magnesium and silicon
that form magnesium silicide (Mg2Si). Alloys have a good compromise of
corrosion resistance and material strength. Al6061 is one of the most popular of all
aluminum alloys and its a yield strength is comparable to mild carbon steel.
The 6xxx series alloys are used for the
majority of extrusions produced. Alloys can be heat-treatable.
Extrusion A fabrication method where solid metals are forced through a die to form a complex shape.
Temper Designation: The
designation for the temper is done with letters. T means thermally treated, O means annealed, H means strain-hardened.
Second Moment of Area: The
capacity of a cross-section to resist bending.
Radius of Gyration (Area): The
distance from an axis at which the area of a body may be assumed to be
concentrated and the second moment area of this configuration equal to the
second moment area of the actual body about the same axis.
Section Modulus: The moment of
inertia of the area of the cross section of a structural member divided by the
distance from the center of gravity to the farthest point of the section; a
measure of the flexural strength of the beam.