W – wide flange

W920x491

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 = 422d = 958tf = 47tf = 47tw = 25.9tw = 25.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
958mm
Flange widthbf
422mm
Web thicknesstw
25.9mm
Flange thicknesstf
47mm
Distance k (design)kdes
71.1mm
Distance k (detailing)kdet
79.4mm
Distance k1k1
44.5mm
Web clear depthT
797mm
Distance between flange centroidsho
912mm

Mass and area

Mass per lengthm
491kg/m
Cross-sectional areaA
62,500mm²

Strong axis x–x

Moment of inertiaIx
9,70010⁶ mm⁴
Elastic section modulusSx
20,30010³ mm³
Plastic section modulusZx
23,10010³ mm³
Radius of gyrationrx
394mm

Weak axis y–y

Moment of inertiaIy
59110⁶ mm⁴
Elastic section modulusSy
2,80010³ mm³
Plastic section modulusZy
4,34010³ mm³
Radius of gyrationry
97.3mm

Torsion and stability

Torsional constantJ
35,10010³ mm⁴
Warping constantCw
122,00010⁹ mm⁶
Effective radius of gyrationrts
115mm

Slenderness ratios

Flange slendernessbf/2tf
4.49
Web slendernessh/tw
31.4

Equivalents in other standards