Rectangular and square HSS

HSS20X16X1/2 HSS508X406.4X12.7

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 = 16d = 20tdes = 0.465tdes = 0.465
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
16in
Nominal thicknesstnom
0.5in
Design thicknesstdes
0.465in

Mass and area

Mass per lengthm
116.9lb/ft
Cross-sectional areaA
32.1in²

Strong axis x–x

Moment of inertiaIx
1,900in⁴
Elastic section modulusSx
190in³
Plastic section modulusZx
224in³
Radius of gyrationrx
7.7in

Weak axis y–y

Moment of inertiaIy
1,350in⁴
Elastic section modulusSy
169in³
Plastic section modulusZy
193in³
Radius of gyrationry
6.5in

Torsion and stability

Torsional constantJ
2,480in⁴
Torsional modulusC
282in³

Slenderness ratios

Wall slendernessb/t
31.4
Wall slendernessh/t
40

Equivalents in other standards