W – wide flange

W920x201

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 = 305d = 904tf = 20.1tf = 20.1tw = 15.2tw = 15.2
Cross-section, to scaledimensions in mm

Dimensions

Depthd
904mm
Flange widthbf
305mm
Web thicknesstw
15.2mm
Flange thicknesstf
20.1mm
Distance k (design)kdes
39.1mm
Distance k (detailing)kdet
52.4mm
Distance k1k1
38.1mm
Web clear depthT
800mm
Distance between flange centroidsho
884mm

Mass and area

Mass per lengthm
201kg/m
Cross-sectional areaA
25,700mm²

Strong axis x–x

Moment of inertiaIx
3,25010⁶ mm⁴
Elastic section modulusSx
7,19010³ mm³
Plastic section modulusZx
8,34010³ mm³
Radius of gyrationrx
356mm

Weak axis y–y

Moment of inertiaIy
93.710⁶ mm⁴
Elastic section modulusSy
61810³ mm³
Plastic section modulusZy
97810³ mm³
Radius of gyrationry
60.5mm

Torsion and stability

Torsional constantJ
2,91010³ mm⁴
Warping constantCw
18,30010⁹ mm⁶
Effective radius of gyrationrts
75.9mm

Slenderness ratios

Flange slendernessbf/2tf
7.56
Web slendernessh/tw
54.1

Equivalents in other standards