MC – miscellaneous channels

MC310x21.3

Standard: ASTM A6/A6M (désignations métriques)Source: SI values from the AISC v16.0 database (ASTM A6 shapes common to Canada)
ASTM A6 rolled shapes are the same in Canada; the CISC list may differ slightly (availability).
xybf = 53.8d = 305tf = 7.95tf = 7.95tw = 6.35tw = 6.35
Cross-section, to scaledimensions in mm

Dimensions

Depthd
305mm
Flange widthbf
53.8mm
Web thicknesstw
6.35mm
Flange thicknesstf
7.95mm
Distance k (design)kdes
19.1mm
Distance k (detailing)kdet
19.1mm
Web clear depthT
267mm
Distance between flange centroidsho
297mm

Mass and area

Mass per lengthm
21.3kg/m
Cross-sectional areaA
2,700mm²

Strong axis x–x

Moment of inertiaIx
31.710⁶ mm⁴
Elastic section modulusSx
20810³ mm³
Plastic section modulusZx
26110³ mm³
Radius of gyrationrx
108mm

Weak axis y–y

Moment of inertiaIy
0.41610⁶ mm⁴
Elastic section modulusSy
9.4110³ mm³
Plastic section modulusZy
19.810³ mm³
Radius of gyrationry
12.4mm

Torsion and stability

Torsional constantJ
48.710³ mm⁴
Warping constantCw
8.8110⁹ mm⁶
Effective radius of gyrationrts
17.1mm
Polar radius (shear center)r̄o
111mm
Flexural constantH
0.965
Shear centereo
11mm

Centers

Centroidx̄
9.58mm
Plastic neutral axisxp
4.42mm

Slenderness ratios

Web slendernessh/tw
42.6
Wall slendernessb/t
6.77

Equivalents in other standards