Rectangular and square HSS

HSS22X18X3/8 HSS558.8X457.2X9.5

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 = 0.349tdes = 0.349
Cross-section, to scaledimensions in inches

Dimensions

Depthd
22in
Widthb
18in
Nominal thicknesstnom
0.375in
Design thicknesstdes
0.349in

Mass and area

Mass per lengthm
98.94lb/ft
Cross-sectional areaA
27.1in²

Strong axis x–x

Moment of inertiaIx
2,000in⁴
Elastic section modulusSx
182in³
Plastic section modulusZx
212in³
Radius of gyrationrx
8.58in

Weak axis y–y

Moment of inertiaIy
1,470in⁴
Elastic section modulusSy
164in³
Plastic section modulusZy
185in³
Radius of gyrationry
7.37in

Torsion and stability

Torsional constantJ
2,620in⁴
Torsional modulusC
267in³

Slenderness ratios

Wall slendernessb/t
48.6
Wall slendernessh/t
60

Equivalents in other standards