HSS18×6×1/4 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.

HSS18×6×1/4 is a rectangular tube 18 in. by 6 in. with a 1/4 in. nominal wall.

At 39.43 lb per foot it is the lightest of the 6 HSS18×6 sizes, which run from 39.43 to 109.91 lb/ft.

For strong-axis bending its section modulus is Sx = 46.5 in³ and its moment of inertia Ix = 419 in⁴, with a plastic modulus Zx = 59.4 in³.

Detailing dimensions

Depth (Ht)18"
Width (B)6"
Nominal wall (t)1/4"

Section properties

Weight39.43 lb/ft
Area (A)10.8 in²
Ix419 in⁴
Sx46.5 in³
Zx59.4 in³
rx6.22 in
Iy75.1 in⁴
Sy25 in³
Zy27.3 in³
ry2.63 in
J210 in⁴

Other HSS18×6 sizes

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

HSS18×6×5/16HSS18×6×3/8HSS18×6×1/2HSS18×6×5/8HSS18×6×3/4

All HSS18×6 sizes and dimensions →

Similar weight HSS shapes

Comparable 39.43 lb/ft sections in other HSS tube sizes.

HSS20×4×1/439.43 lb/ft · Sx 45.8 in³HSS16×8×1/439.43 lb/ft · Sx 46.1 in³HSS14×10×1/439.43 lb/ft · Sx 44.3 in³HSS12×12×1/439.43 lb/ft · Sx 41.4 in³HSS10.000×0.37538.58 lb/ft · Sx 24.7 in³HSS16×4×5/1640.35 lb/ft · Sx 38.5 in³HSS14×6×5/1640.35 lb/ft · Sx 38.7 in³HSS12×8×5/1640.35 lb/ft · Sx 37.4 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 HSS18×6×1/4 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing