Rectangular and square HSS

HSS20X20X1 HSS508X508X25.4

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 = 20d = 20tdes = 0.93tdes = 0.93
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
20in
Nominal thicknesstnom
1in
Design thicknesstdes
0.93in

Mass and area

Mass per lengthm
249.9lb/ft
Cross-sectional areaA
68.7in²

Strong axis x–x

Moment of inertiaIx
4,100in⁴
Elastic section modulusSx
410in³
Plastic section modulusZx
486in³
Radius of gyrationrx
7.72in

Weak axis y–y

Moment of inertiaIy
4,100in⁴
Elastic section modulusSy
410in³
Plastic section modulusZy
486in³
Radius of gyrationry
7.72in

Torsion and stability

Torsional constantJ
6,600in⁴
Torsional modulusC
673in³

Slenderness ratios

Wall slendernessb/t
18.5
Wall slendernessh/t
18.5

Equivalents in other standards