AA standard I-beams

I 7 x 5.80

Standard: Aluminum AssociationSource: Aluminum Association standard shape dimensions (as listed by Engineers Edge) — calculated properties
Mass calculated at 2700 kg/m³. Flange toe radius ignored (area difference < 1.5%).
xybf = 4.5d = 7tf = 0.38tf = 0.38tw = 0.23tw = 0.23
Cross-section, to scaledimensions in inches

Dimensions

Depthd
7in
Flange widthbf
4.5in
Web thicknesstw
0.23in
Flange thicknesstf
0.38in
Root radiusr
0.3in

Mass and area

Mass per lengthm
5.774lb/ft
Cross-sectional areaA
4.932in²
Published area (standard)A pub.
4.932in²
Outside perimeterP
31.02in

Strong axis x–x

Moment of inertiaIx
42.89in⁴
Elastic section modulusSx
12.25in³
Plastic section modulusZx
13.79in³
Radius of gyrationrx
2.949in

Weak axis y–y

Moment of inertiaIy
5.78in⁴
Elastic section modulusSy
2.569in³
Plastic section modulusZy
3.944in³
Radius of gyrationry
1.083in

Torsion and stability

Torsional constantJ
0.207in⁴
Warping constantCw
63.23in⁶

Equivalents in other standards