Rectangular and square HSS

HSS20X20X1/2 HSS508X508X12.7

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 = 0.465tdes = 0.465
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
20in
Nominal thicknesstnom
0.5in
Design thicknesstdes
0.465in

Mass and area

Mass per lengthm
130.5lb/ft
Cross-sectional areaA
35.8in²

Strong axis x–x

Moment of inertiaIx
2,260in⁴
Elastic section modulusSx
226in³
Plastic section modulusZx
261in³
Radius of gyrationrx
7.95in

Weak axis y–y

Moment of inertiaIy
2,260in⁴
Elastic section modulusSy
226in³
Plastic section modulusZy
261in³
Radius of gyrationry
7.95in

Torsion and stability

Torsional constantJ
3,510in⁴
Torsional modulusC
355in³

Slenderness ratios

Wall slendernessb/t
40
Wall slendernessh/t
40

Equivalents in other standards