HSS18×10×3/8 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.

HSS18×10×3/8 is a rectangular tube 18 in. by 10 in. with a 3/8 in. nominal wall.

At 68.31 lb per foot it is one of the 5 HSS18×10 sizes, which run from 46.24 to 110.36 lb/ft.

For strong-axis bending its section modulus is Sx = 91.1 in³ and its moment of inertia Ix = 820 in⁴, with a plastic modulus Zx = 111 in³.

Detailing dimensions

Depth (Ht)18"
Width (B)10"
Nominal wall (t)3/8"

Section properties

Weight68.31 lb/ft
Area (A)18.7 in²
Ix820 in⁴
Sx91.1 in³
Zx111 in³
rx6.61 in
Iy332 in⁴
Sy66.4 in³
Zy74.2 in³
ry4.21 in
J752 in⁴

Other HSS18×10 sizes

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

HSS18×10×1/4HSS18×10×5/16HSS18×10×1/2HSS18×10×5/8

All HSS18×10 sizes and dimensions →

Similar weight HSS shapes

Comparable 68.31 lb/ft sections in other HSS tube sizes.

HSS20×8×3/868.31 lb/ft · Sx 92.6 in³HSS16×12×3/868.31 lb/ft · Sx 87.7 in³HSS14×14×3/868.31 lb/ft · Sx 82.5 in³HSS14×4×5/867.82 lb/ft · Sx 53.3 in³HSS12×6×5/867.82 lb/ft · Sx 53.4 in³HSS10×8×5/867.82 lb/ft · Sx 50.5 in³HSS9×9×5/867.82 lb/ft · Sx 47.9 in³HSS13.375×0.50068.82 lb/ft · Sx 58.8 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 HSS18×10×3/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing