Rectangular and square HSS

HSS22X18X1/2 HSS558.8X457.2X12.7

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 = 18d = 22tdes = 0.465tdes = 0.465
Cross-section, to scaledimensions in inches

Dimensions

Depthd
22in
Widthb
18in
Nominal thicknesstnom
0.5in
Design thicknesstdes
0.465in

Mass and area

Mass per lengthm
130.5lb/ft
Cross-sectional areaA
35.8in²

Strong axis x–x

Moment of inertiaIx
2,600in⁴
Elastic section modulusSx
236in³
Plastic section modulusZx
277in³
Radius of gyrationrx
8.52in

Weak axis y–y

Moment of inertiaIy
1,910in⁴
Elastic section modulusSy
213in³
Plastic section modulusZy
242in³
Radius of gyrationry
7.31in

Torsion and stability

Torsional constantJ
3,440in⁴
Torsional modulusC
351in³

Slenderness ratios

Wall slendernessb/t
35.7
Wall slendernessh/t
44.3

Equivalents in other standards