Rectangular and square HSS

HSS24X18X3/8 HSS609.6X457.2X9.5

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 = 24tdes = 0.349tdes = 0.349
Cross-section, to scaledimensions in inches

Dimensions

Depthd
24in
Widthb
18in
Nominal thicknesstnom
0.375in
Design thicknesstdes
0.349in

Mass and area

Mass per lengthm
104lb/ft
Cross-sectional areaA
28.5in²

Strong axis x–x

Moment of inertiaIx
2,450in⁴
Elastic section modulusSx
204in³
Plastic section modulusZx
240in³
Radius of gyrationrx
9.27in

Weak axis y–y

Moment of inertiaIy
1,580in⁴
Elastic section modulusSy
176in³
Plastic section modulusZy
197in³
Radius of gyrationry
7.45in

Torsion and stability

Torsional constantJ
2,970in⁴
Torsional modulusC
291in³

Slenderness ratios

Wall slendernessb/t
48.6
Wall slendernessh/t
65.8

Equivalents in other standards