Rectangular and square HSS

HSS20X4X1/4 HSS508X101.6X6.4

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 = 4d = 20tdes = 0.233tdes = 0.233
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
4in
Nominal thicknesstnom
0.25in
Design thicknesstdes
0.233in

Mass and area

Mass per lengthm
39.43lb/ft
Cross-sectional areaA
10.8in²

Strong axis x–x

Moment of inertiaIx
458in⁴
Elastic section modulusSx
45.8in³
Plastic section modulusZx
61.5in³
Radius of gyrationrx
6.5in

Weak axis y–y

Moment of inertiaIy
34.3in⁴
Elastic section modulusSy
17.1in³
Plastic section modulusZy
18.7in³
Radius of gyrationry
1.78in

Torsion and stability

Torsional constantJ
111in⁴
Torsional modulusC
34.7in³

Slenderness ratios

Wall slendernessb/t
14.2
Wall slendernessh/t
82.8

Equivalents in other standards