Rectangular and square HSS

HSS20X4X1/2 HSS508X101.6X12.7

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 = 4d = 20tdes = 0.465tdes = 0.465
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
4in
Nominal thicknesstnom
0.5in
Design thicknesstdes
0.465in

Mass and area

Mass per lengthm
76.07lb/ft
Cross-sectional areaA
20.9in²

Strong axis x–x

Moment of inertiaIx
838in⁴
Elastic section modulusSx
83.8in³
Plastic section modulusZx
115in³
Radius of gyrationrx
6.33in

Weak axis y–y

Moment of inertiaIy
58.7in⁴
Elastic section modulusSy
29.3in³
Plastic section modulusZy
34in³
Radius of gyrationry
1.68in

Torsion and stability

Torsional constantJ
195in⁴
Torsional modulusC
63.8in³

Slenderness ratios

Wall slendernessb/t
5.6
Wall slendernessh/t
40

Equivalents in other standards