HSS9×9×3/8 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.

HSS9×9×3/8 is a square tube 9 in. by 9 in. with a 3/8 in. nominal wall.

At 42.79 lb per foot it is one of the 7 HSS9×9 sizes, which run from 14.96 to 67.82 lb/ft.

For strong-axis bending its section modulus is Sx = 32.2 in³ and its moment of inertia Ix = 145 in⁴, with a plastic modulus Zx = 37.8 in³.

Detailing dimensions

Depth (Ht)9"
Width (B)9"
Nominal wall (t)3/8"

Section properties

Weight42.79 lb/ft
Area (A)11.8 in²
Ix145 in⁴
Sx32.2 in³
Zx37.8 in³
rx3.51 in
Iy145 in⁴
Sy32.2 in³
Zy37.8 in³
ry3.51 in
J231 in⁴

Other HSS9×9 sizes

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

HSS9×9×1/8HSS9×9×3/16HSS9×9×1/4HSS9×9×5/16HSS9×9×1/2HSS9×9×5/8

All HSS9×9 sizes and dimensions →

Similar weight HSS shapes

Comparable 42.79 lb/ft sections in other HSS tube sizes.

HSS14×4×3/842.79 lb/ft · Sx 36 in³HSS12×6×3/842.79 lb/ft · Sx 35.9 in³HSS10×8×3/842.79 lb/ft · Sx 33.9 in³HSS20×6×1/442.84 lb/ft · Sx 54.9 in³HSS18×8×1/442.84 lb/ft · Sx 54.7 in³HSS16×10×1/442.84 lb/ft · Sx 53.3 in³HSS14×12×1/442.84 lb/ft · Sx 50.6 in³HSS8×4×5/842.3 lb/ft · Sx 20.5 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 HSS9×9×3/8 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing