AA standard I-beams

I 5 x 3.70

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 = 3.5d = 5tf = 0.32tf = 0.32tw = 0.19tw = 0.19
Cross-section, to scaledimensions in inches

Dimensions

Depthd
5in
Flange widthbf
3.5in
Web thicknesstw
0.19in
Flange thicknesstf
0.32in
Root radiusr
0.3in

Mass and area

Mass per lengthm
3.682lb/ft
Cross-sectional areaA
3.146in²
Published area (standard)A pub.
3.146in²
Outside perimeterP
23.1in

Strong axis x–x

Moment of inertiaIx
13.94in⁴
Elastic section modulusSx
5.577in³
Plastic section modulusZx
6.308in³
Radius of gyrationrx
2.105in

Weak axis y–y

Moment of inertiaIy
2.291in⁴
Elastic section modulusSy
1.309in³
Plastic section modulusZy
2.012in³
Radius of gyrationry
0.8535in

Torsion and stability

Torsional constantJ
0.09831in⁴
Warping constantCw
12.52in⁶

Equivalents in other standards