W shapes (wide flange)

W21X50 W530X74

Standard: AISC Shapes Database v16.0Source: AISC (aisc.org) — Shapes Database v16.0 (Excel file)
Values published by AISC, in US customary (original) and SI units.
xybf = 6.53d = 20.8tf = 0.535tf = 0.535tw = 0.38tw = 0.38
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20.8in
Flange widthbf
6.53in
Web thicknesstw
0.38in
Flange thicknesstf
0.535in
Distance k (design)kdes
1.04in
Distance k (detailing)kdet
1.25in
Distance k1k1
0.8125in
Web clear depthT
18.38in
Distance between flange centroidsho
20.3in

Mass and area

Mass per lengthm
50lb/ft
Cross-sectional areaA
14.7in²

Strong axis x–x

Moment of inertiaIx
984in⁴
Elastic section modulusSx
94.5in³
Plastic section modulusZx
110in³
Radius of gyrationrx
8.18in

Weak axis y–y

Moment of inertiaIy
24.9in⁴
Elastic section modulusSy
7.64in³
Plastic section modulusZy
12.2in³
Radius of gyrationry
1.3in

Torsion and stability

Torsional constantJ
1.14in⁴
Warping constantCw
2,570in⁶
Effective radius of gyrationrts
1.64in

Slenderness ratios

Flange slendernessbf/2tf
6.1
Web slendernessh/tw
49.4

Equivalents in other standards