W – wide flange

W250x89

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 = 257d = 259tf = 17.3tf = 17.3tw = 10.7tw = 10.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
259mm
Flange widthbf
257mm
Web thicknesstw
10.7mm
Flange thicknesstf
17.3mm
Distance k (design)kdes
30mm
Distance k (detailing)kdet
34.9mm
Distance k1k1
20.6mm
Web clear depthT
191mm
Distance between flange centroidsho
242mm

Mass and area

Mass per lengthm
89kg/m
Cross-sectional areaA
11,400mm²

Strong axis x–x

Moment of inertiaIx
14210⁶ mm⁴
Elastic section modulusSx
1,09010³ mm³
Plastic section modulusZx
1,22010³ mm³
Radius of gyrationrx
112mm

Weak axis y–y

Moment of inertiaIy
48.310⁶ mm⁴
Elastic section modulusSy
37710³ mm³
Plastic section modulusZy
57410³ mm³
Radius of gyrationry
65.3mm

Torsion and stability

Torsional constantJ
1,03010³ mm⁴
Warping constantCw
70910⁹ mm⁶
Effective radius of gyrationrts
73.2mm

Slenderness ratios

Flange slendernessbf/2tf
7.41
Web slendernessh/tw
18.7

Equivalents in other standards