HSS24×18×5/8 square/rectangular HSS tube

Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.

HSS24×18×5/8 is a rectangular tube 24 in. by 18 in. with a 5/8 in. nominal wall.

At 169.91 lb per foot it is one of the 5 HSS24×18 sizes, which run from 87.14 to 201.79 lb/ft.

For strong-axis bending its section modulus is Sx = 325 in³ and its moment of inertia Ix = 3900 in⁴, with a plastic modulus Zx = 386 in³.

Detailing dimensions

Depth (Ht)24"
Width (B)18"
Nominal wall (t)5/8"

Section properties

Weight169.91 lb/ft
Area (A)46.6 in²
Ix3900 in⁴
Sx325 in³
Zx386 in³
rx9.15 in
Iy2510 in⁴
Sy279 in³
Zy318 in³
ry7.34 in
J4810 in⁴

Other HSS24×18 sizes

Same nominal size, different weight — useful when you are checking a substitution or a lighter section.

HSS24×18×5/16HSS24×18×3/8HSS24×18×1/2HSS24×18×3/4

All HSS24×18 sizes and dimensions →

Similar weight HSS shapes

Comparable 169.91 lb/ft sections in other HSS tube sizes.

HSS22×20×5/8169.91 lb/ft · Sx 313 in³HSS26.000×0.625169.54 lb/ft · Sx 289 in³HSS22.000×0.750170.37 lb/ft · Sx 241 in³HSS24×12×3/4171.16 lb/ft · Sx 287 in³HSS22×14×3/4171.16 lb/ft · Sx 281 in³HSS20×16×3/4171.16 lb/ft · Sx 271 in³HSS18×18×3/4171.16 lb/ft · Sx 258 in³HSS20×8×1168.18 lb/ft · Sx 206 in³

Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need HSS24×18×5/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing