Rectangular and square HSS

HSS20X6X1/4 HSS508X152.4X6.4

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 = 6d = 20tdes = 0.233tdes = 0.233
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
6in
Nominal thicknesstnom
0.25in
Design thicknesstdes
0.233in

Mass and area

Mass per lengthm
42.84lb/ft
Cross-sectional areaA
11.8in²

Strong axis x–x

Moment of inertiaIx
549in⁴
Elastic section modulusSx
54.9in³
Plastic section modulusZx
70.7in³
Radius of gyrationrx
6.83in

Weak axis y–y

Moment of inertiaIy
82.9in⁴
Elastic section modulusSy
27.6in³
Plastic section modulusZy
30in³
Radius of gyrationry
2.66in

Torsion and stability

Torsional constantJ
240in⁴
Torsional modulusC
53.1in³

Slenderness ratios

Wall slendernessb/t
22.8
Wall slendernessh/t
82.8

Equivalents in other standards