MC – miscellaneous channels

MC180x33.8

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 = 91.4d = 178tf = 12.7tf = 12.7tw = 12.8tw = 12.8
Cross-section, to scaledimensions in mm

Dimensions

Depthd
178mm
Flange widthbf
91.4mm
Web thicknesstw
12.8mm
Flange thicknesstf
12.7mm
Distance k (design)kdes
28.7mm
Distance k (detailing)kdet
28.6mm
Web clear depthT
121mm
Distance between flange centroidsho
165mm

Mass and area

Mass per lengthm
33.8kg/m
Cross-sectional areaA
4,300mm²

Strong axis x–x

Moment of inertiaIx
19.710⁶ mm⁴
Elastic section modulusSx
22110³ mm³
Plastic section modulusZx
26910³ mm³
Radius of gyrationrx
67.8mm

Weak axis y–y

Moment of inertiaIy
3.0110⁶ mm⁴
Elastic section modulusSy
46.410³ mm³
Plastic section modulusZy
88.210³ mm³
Radius of gyrationry
26.4mm

Torsion and stability

Torsional constantJ
26010³ mm⁴
Warping constantCw
15.710⁹ mm⁶
Effective radius of gyrationrts
31.2mm
Polar radius (shear center)r̄o
89.7mm
Flexural constantH
0.659
Shear centereo
25.7mm

Centers

Centroidx̄
26.4mm
Plastic neutral axisxp
12.1mm

Slenderness ratios

Web slendernessh/tw
9.22
Wall slendernessb/t
7.2

Equivalents in other standards