Rectangular and square HSS

HSS22X18X5/8 HSS558.8X457.2X15.9

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 = 18d = 22tdes = 0.581tdes = 0.581
Cross-section, to scaledimensions in inches

Dimensions

Depthd
22in
Widthb
18in
Nominal thicknesstnom
0.625in
Design thicknesstdes
0.581in

Mass and area

Mass per lengthm
161.4lb/ft
Cross-sectional areaA
44.3in²

Strong axis x–x

Moment of inertiaIx
3,170in⁴
Elastic section modulusSx
288in³
Plastic section modulusZx
341in³
Radius of gyrationrx
8.47in

Weak axis y–y

Moment of inertiaIy
2,330in⁴
Elastic section modulusSy
259in³
Plastic section modulusZy
297in³
Radius of gyrationry
7.26in

Torsion and stability

Torsional constantJ
4,230in⁴
Torsional modulusC
433in³

Slenderness ratios

Wall slendernessb/t
28
Wall slendernessh/t
34.9

Equivalents in other standards