Rectangular and square HSS

HSS24X18X3/4 HSS609.6X457.2X19.0

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 = 0.698tdes = 0.698
Cross-section, to scaledimensions in inches

Dimensions

Depthd
24in
Widthb
18in
Nominal thicknesstnom
0.75in
Design thicknesstdes
0.698in

Mass and area

Mass per lengthm
201.8lb/ft
Cross-sectional areaA
55.4in²

Strong axis x–x

Moment of inertiaIx
4,580in⁴
Elastic section modulusSx
382in³
Plastic section modulusZx
456in³
Radius of gyrationrx
9.09in

Weak axis y–y

Moment of inertiaIy
2,940in⁴
Elastic section modulusSy
327in³
Plastic section modulusZy
375in³
Radius of gyrationry
7.29in

Torsion and stability

Torsional constantJ
5,690in⁴
Torsional modulusC
562in³

Slenderness ratios

Wall slendernessb/t
22.8
Wall slendernessh/t
31.4

Equivalents in other standards