Rectangular and square HSS

HSS20X6X5/16 HSS508X152.4X7.9

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.
xyb = 6d = 20tdes = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
6in
Nominal thicknesstnom
0.3125in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
53.11lb/ft
Cross-sectional areaA
14.6in²

Strong axis x–x

Moment of inertiaIx
673in⁴
Elastic section modulusSx
67.3in³
Plastic section modulusZx
87.1in³
Radius of gyrationrx
6.79in

Weak axis y–y

Moment of inertiaIy
101in⁴
Elastic section modulusSy
33.6in³
Plastic section modulusZy
36.9in³
Radius of gyrationry
2.63in

Torsion and stability

Torsional constantJ
293in⁴
Torsional modulusC
65.4in³

Slenderness ratios

Wall slendernessb/t
17.6
Wall slendernessh/t
65.7

Equivalents in other standards