MC8x20 – MC Shapes - American channels

MC8x20 is a channel 8 in (203 mm) deep with a 3.03 in (77 mm) flange, weighing 20 lb/ft (29.8 kg/m).

MC shapes are additional standardized channel sections that sit outside the C-shape series — extra depth and weight combinations that fill gaps the standard C series doesn't cover. They're used the same way C shapes are — framing, bracing, purlins, and general structural channel applications — and are typically specified when a project's loading or geometry calls for a specific depth-to-weight combination that only the MC series provides.

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Dimensions

PropertyValue
Nominal Weight (lb/ft)20.0
Depth of Section (in)8.0
Width of Section (in)3.03
Web Thickness (in)0.4
Flange Thickness (in)0.5
Kdet Dimension (in)1.125
T Dimension (in)5.75

Full sortable table: Dimensions table for this family

Section Properties

PropertyValue
Ix (in⁴)54.4
Zx (in³)16.4
Sx (in³)13.6
rx (in)3.04
Iy (in⁴)4.42
Zy (in³)3.86
Sy (in³)2.02
ry (in)0.867
J (in⁴)0.441
Cw (in⁶)47.8
ro (in)3.58
H (-)0.779
rts (in)1.03
ho (in)7.5

Full sortable table: Section properties table for this family