AA standard channels

C 5 x 2.21

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 = 2.25d = 5tf = 0.26tf = 0.26tw = 0.15tw = 0.15
Cross-section, to scaledimensions in inches

Dimensions

Depthd
5in
Flange widthbf
2.25in
Web thicknesstw
0.15in
Flange thicknesstf
0.26in
Root radiusr
0.3in

Mass and area

Mass per lengthm
2.201lb/ft
Cross-sectional areaA
1.881in²
Published area (standard)A pub.
1.88in²
Outside perimeterP
18.44in

Strong axis x–x

Moment of inertiaIx
7.885in⁴
Elastic section modulusSx
3.154in³
Plastic section modulusZx
3.609in³
Radius of gyrationrx
2.048in

Weak axis y–y

Moment of inertiaIy
0.976in⁴
Elastic section modulusSy
0.6426in³
Plastic section modulusZy
1.156in³
Radius of gyrationry
0.7204in

Torsion and stability

Torsional constantJ
0.03305in⁴

Centers

Centroidx̄
0.7312in

Equivalents in other standards