AA standard I-beams

I 3 x 2.03

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 = 2.5d = 3tf = 0.26tf = 0.26tw = 0.15tw = 0.15
Cross-section, to scaledimensions in inches

Dimensions

Depthd
3in
Flange widthbf
2.5in
Web thicknesstw
0.15in
Flange thicknesstf
0.26in
Root radiusr
0.25in

Mass and area

Mass per lengthm
2.02lb/ft
Cross-sectional areaA
1.726in²
Published area (standard)A pub.
1.726in²
Outside perimeterP
15.27in

Strong axis x–x

Moment of inertiaIx
2.713in⁴
Elastic section modulusSx
1.809in³
Plastic section modulusZx
2.075in³
Radius of gyrationrx
1.254in

Weak axis y–y

Moment of inertiaIy
0.6788in⁴
Elastic section modulusSy
0.5431in³
Plastic section modulusZy
0.8335in³
Radius of gyrationry
0.6272in

Torsion and stability

Torsional constantJ
0.03721in⁴
Warping constantCw
1.271in⁶

Equivalents in other standards