MC – miscellaneous channels

MC180x28.4

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 = 87.6d = 178tf = 12.7tf = 12.7tw = 8.94tw = 8.94
Cross-section, to scaledimensions in mm

Dimensions

Depthd
178mm
Flange widthbf
87.6mm
Web thicknesstw
8.94mm
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
28.4kg/m
Cross-sectional areaA
3,620mm²

Strong axis x–x

Moment of inertiaIx
17.910⁶ mm⁴
Elastic section modulusSx
20210³ mm³
Plastic section modulusZx
23810³ mm³
Radius of gyrationrx
70.4mm

Weak axis y–y

Moment of inertiaIy
2.5210⁶ mm⁴
Elastic section modulusSy
41.810³ mm³
Plastic section modulusZy
79.510³ mm³
Radius of gyrationry
26.4mm

Torsion and stability

Torsional constantJ
16910³ mm⁴
Warping constantCw
13.210⁹ mm⁶
Effective radius of gyrationrts
30.2mm
Polar radius (shear center)r̄o
94mm
Flexural constantH
0.638
Shear centereo
29.2mm

Centers

Centroidx̄
27.4mm
Plastic neutral axisxp
14.7mm

Slenderness ratios

Web slendernessh/tw
13.2
Wall slendernessb/t
6.9

Equivalents in other standards