AA standard I-beams

I 6 x 4.03

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 = 4d = 6tf = 0.29tf = 0.29tw = 0.19tw = 0.19
Cross-section, to scaledimensions in inches

Dimensions

Depthd
6in
Flange widthbf
4in
Web thicknesstw
0.19in
Flange thicknesstf
0.29in
Root radiusr
0.3in

Mass and area

Mass per lengthm
4.011lb/ft
Cross-sectional areaA
3.427in²
Published area (standard)A pub.
3.427in²
Outside perimeterP
27.1in

Strong axis x–x

Moment of inertiaIx
21.99in⁴
Elastic section modulusSx
7.329in³
Plastic section modulusZx
8.223in³
Radius of gyrationrx
2.533in

Weak axis y–y

Moment of inertiaIy
3.099in⁴
Elastic section modulusSy
1.549in³
Plastic section modulusZy
2.381in³
Radius of gyrationry
0.9509in

Torsion and stability

Torsional constantJ
0.08972in⁴
Warping constantCw
25.21in⁶

Equivalents in other standards