C – standard channels

C200x17.1

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 = 57.4d = 203tf = 9.91tf = 9.91tw = 5.59tw = 5.59
Cross-section, to scaledimensions in mm

Dimensions

Depthd
203mm
Flange widthbf
57.4mm
Web thicknesstw
5.59mm
Flange thicknesstf
9.91mm
Distance k (design)kdes
23.8mm
Distance k (detailing)kdet
23.8mm
Web clear depthT
156mm
Distance between flange centroidsho
193mm

Mass and area

Mass per lengthm
17.1kg/m
Cross-sectional areaA
2,170mm²

Strong axis x–x

Moment of inertiaIx
13.510⁶ mm⁴
Elastic section modulusSx
13310³ mm³
Plastic section modulusZx
15810³ mm³
Radius of gyrationrx
79mm

Weak axis y–y

Moment of inertiaIy
0.54510⁶ mm⁴
Elastic section modulusSy
12.710³ mm³
Plastic section modulusZy
25.710³ mm³
Radius of gyrationry
15.8mm

Torsion and stability

Torsional constantJ
54.110³ mm⁴
Warping constantCw
4.4310⁹ mm⁶
Effective radius of gyrationrts
19.2mm
Polar radius (shear center)r̄o
86.6mm
Flexural constantH
0.862
Shear centereo
17.7mm

Centers

Centroidx̄
14.5mm
Plastic neutral axisxp
5.36mm

Slenderness ratios

Web slendernessh/tw
28.9
Wall slendernessb/t
5.79

Equivalents in other standards