W – wide flange

W840x251

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 = 292d = 859tf = 31tf = 31tw = 17tw = 17
Cross-section, to scaledimensions in mm

Dimensions

Depthd
859mm
Flange widthbf
292mm
Web thicknesstw
17mm
Flange thicknesstf
31mm
Distance k (design)kdes
48.8mm
Distance k (detailing)kdet
61.9mm
Distance k1k1
39.7mm
Web clear depthT
733mm
Distance between flange centroidsho
828mm

Mass and area

Mass per lengthm
251kg/m
Cross-sectional areaA
31,900mm²

Strong axis x–x

Moment of inertiaIx
3,87010⁶ mm⁴
Elastic section modulusSx
9,00010³ mm³
Plastic section modulusZx
10,30010³ mm³
Radius of gyrationrx
348mm

Weak axis y–y

Moment of inertiaIy
12910⁶ mm⁴
Elastic section modulusSy
88310³ mm³
Plastic section modulusZy
1,38010³ mm³
Radius of gyrationry
63.5mm

Torsion and stability

Torsional constantJ
7,37010³ mm⁴
Warping constantCw
22,10010⁹ mm⁶
Effective radius of gyrationrts
77mm

Slenderness ratios

Flange slendernessbf/2tf
4.71
Web slendernessh/tw
44.7

Equivalents in other standards