M – miscellaneous shapes

M310x17.6

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 = 78d = 305tf = 5.72tf = 5.72tw = 4.5tw = 4.5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
305mm
Flange widthbf
78mm
Web thicknesstw
4.5mm
Flange thicknesstf
5.72mm
Distance k (design)kdes
14.3mm
Distance k (detailing)kdet
14.3mm
Distance k1k1
9.53mm
Web clear depthT
276mm
Distance between flange centroidsho
300mm

Mass and area

Mass per lengthm
17.6kg/m
Cross-sectional areaA
2,240mm²

Strong axis x–x

Moment of inertiaIx
30.110⁶ mm⁴
Elastic section modulusSx
19710³ mm³
Plastic section modulusZx
23410³ mm³
Radius of gyrationrx
116mm

Weak axis y–y

Moment of inertiaIy
0.45410⁶ mm⁴
Elastic section modulusSy
11.610³ mm³
Plastic section modulusZy
18.810³ mm³
Radius of gyrationry
14.2mm

Torsion and stability

Torsional constantJ
20.810³ mm⁴
Warping constantCw
10.110⁹ mm⁶
Effective radius of gyrationrts
18.6mm

Slenderness ratios

Flange slendernessbf/2tf
6.81
Web slendernessh/tw
62.5

Equivalents in other standards