W shapes (wide flange)

W21X275 W530X409

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 = 12.9d = 24.1tf = 2.19tf = 2.19tw = 1.22tw = 1.22
Cross-section, to scaledimensions in inches

Dimensions

Depthd
24.1in
Flange widthbf
12.9in
Web thicknesstw
1.22in
Flange thicknesstf
2.19in
Distance k (design)kdes
3.37in
Distance k (detailing)kdet
3.438in
Distance k1k1
1.813in
Web clear depthT
17.25in
Distance between flange centroidsho
21.9in

Mass and area

Mass per lengthm
275lb/ft
Cross-sectional areaA
81.8in²

Strong axis x–x

Moment of inertiaIx
7,690in⁴
Elastic section modulusSx
638in³
Plastic section modulusZx
749in³
Radius of gyrationrx
9.7in

Weak axis y–y

Moment of inertiaIy
787in⁴
Elastic section modulusSy
122in³
Plastic section modulusZy
191in³
Radius of gyrationry
3.1in

Torsion and stability

Torsional constantJ
107in⁴
Warping constantCw
94,400in⁶
Effective radius of gyrationrts
3.68in

Slenderness ratios

Flange slendernessbf/2tf
2.95
Web slendernessh/tw
14.2

Equivalents in other standards