C – standard channels

C380x50.4

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 = 86.4d = 381tf = 16.5tf = 16.5tw = 10.2tw = 10.2
Cross-section, to scaledimensions in mm

Dimensions

Depthd
381mm
Flange widthbf
86.4mm
Web thicknesstw
10.2mm
Flange thicknesstf
16.5mm
Distance k (design)kdes
36.6mm
Distance k (detailing)kdet
36.5mm
Web clear depthT
308mm
Distance between flange centroidsho
366mm

Mass and area

Mass per lengthm
50.4kg/m
Cross-sectional areaA
6,450mm²

Strong axis x–x

Moment of inertiaIx
13110⁶ mm⁴
Elastic section modulusSx
68810³ mm³
Plastic section modulusZx
83210³ mm³
Radius of gyrationrx
142mm

Weak axis y–y

Moment of inertiaIy
3.3610⁶ mm⁴
Elastic section modulusSy
50.610³ mm³
Plastic section modulusZy
10110³ mm³
Radius of gyrationry
22.9mm

Torsion and stability

Torsional constantJ
42010³ mm⁴
Warping constantCw
96.110⁹ mm⁶
Effective radius of gyrationrts
28.7mm
Polar radius (shear center)r̄o
151mm
Flexural constantH
0.92
Shear centereo
22.8mm

Centers

Centroidx̄
20mm
Plastic neutral axisxp
8.43mm

Slenderness ratios

Web slendernessh/tw
30.9
Wall slendernessb/t
5.23

Equivalents in other standards