Rectangular and square HSS

HSS20X4X5/16 HSS508X101.6X7.9

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 = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
4in
Nominal thicknesstnom
0.3125in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
48.86lb/ft
Cross-sectional areaA
13.4in²

Strong axis x–x

Moment of inertiaIx
560in⁴
Elastic section modulusSx
56in³
Plastic section modulusZx
75.6in³
Radius of gyrationrx
6.46in

Weak axis y–y

Moment of inertiaIy
41.2in⁴
Elastic section modulusSy
20.6in³
Plastic section modulusZy
22.9in³
Radius of gyrationry
1.75in

Torsion and stability

Torsional constantJ
134in⁴
Torsional modulusC
42.4in³

Slenderness ratios

Wall slendernessb/t
10.7
Wall slendernessh/t
65.7

Equivalents in other standards