HSS24×18×3/8 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.

HSS24×18×3/8 is a rectangular tube 24 in. by 18 in. with a 3/8 in. nominal wall.

At 104.04 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 = 204 in³ and its moment of inertia Ix = 2450 in⁴, with a plastic modulus Zx = 240 in³.

Detailing dimensions

Depth (Ht)24"
Width (B)18"
Nominal wall (t)3/8"

Section properties

Weight104.04 lb/ft
Area (A)28.5 in²
Ix2450 in⁴
Sx204 in³
Zx240 in³
rx9.27 in
Iy1580 in⁴
Sy176 in³
Zy197 in³
ry7.45 in
J2970 in⁴

Other HSS24×18 sizes

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

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

All HSS24×18 sizes and dimensions →

Similar weight HSS shapes

Comparable 104.04 lb/ft sections in other HSS tube sizes.

HSS22×20×3/8104.04 lb/ft · Sx 196 in³HSS20.000×0.500104 lb/ft · Sx 136 in³HSS24×8×1/2103.3 lb/ft · Sx 159 in³HSS22×10×1/2103.3 lb/ft · Sx 158 in³HSS20×12×1/2103.3 lb/ft · Sx 155 in³HSS16×16×1/2103.3 lb/ft · Sx 141 in³HSS16.000×0.625103 lb/ft · Sx 105 in³HSS26.000×0.375102.73 lb/ft · Sx 178 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 HSS24×18×3/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing