AA standard channels

C 8 x 5.79

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 = 3.75d = 8tf = 0.41tf = 0.41tw = 0.25tw = 0.25
Cross-section, to scaledimensions in inches

Dimensions

Depthd
8in
Flange widthbf
3.75in
Web thicknesstw
0.25in
Flange thicknesstf
0.41in
Root radiusr
0.35in

Mass and area

Mass per lengthm
5.762lb/ft
Cross-sectional areaA
4.923in²
Published area (standard)A pub.
4.92in²
Outside perimeterP
30.2in

Strong axis x–x

Moment of inertiaIx
52.69in⁴
Elastic section modulusSx
13.17in³
Plastic section modulusZx
15.08in³
Radius of gyrationrx
3.272in

Weak axis y–y

Moment of inertiaIy
7.126in⁴
Elastic section modulusSy
2.817in³
Plastic section modulusZy
5.065in³
Radius of gyrationry
1.203in

Torsion and stability

Torsional constantJ
0.2119in⁴

Centers

Centroidx̄
1.22in

Equivalents in other standards