C – standard channels

C75x6.1

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 = 35.8d = 76.2tf = 6.93tf = 6.93tw = 4.32tw = 4.32
Cross-section, to scaledimensions in mm

Dimensions

Depthd
76.2mm
Flange widthbf
35.8mm
Web thicknesstw
4.32mm
Flange thicknesstf
6.93mm
Distance k (design)kdes
17.5mm
Distance k (detailing)kdet
17.5mm
Web clear depthT
41.3mm
Distance between flange centroidsho
69.3mm

Mass and area

Mass per lengthm
6.1kg/m
Cross-sectional areaA
774mm²

Strong axis x–x

Moment of inertiaIx
0.68710⁶ mm⁴
Elastic section modulusSx
1810³ mm³
Plastic section modulusZx
21.610³ mm³
Radius of gyrationrx
30mm

Weak axis y–y

Moment of inertiaIy
0.079510⁶ mm⁴
Elastic section modulusSy
3.2110³ mm³
Plastic section modulusZy
6.5410³ mm³
Radius of gyrationry
10.1mm

Torsion and stability

Torsional constantJ
11.210³ mm⁴
Warping constantCw
0.082410⁹ mm⁶
Effective radius of gyrationrts
11.9mm
Polar radius (shear center)r̄o
38.9mm
Flexural constantH
0.655
Shear centereo
11.7mm

Centers

Centroidx̄
11.1mm
Plastic neutral axisxp
6.65mm

Slenderness ratios

Web slendernessh/tw
10.5
Wall slendernessb/t
5.16

Equivalents in other standards