HSS20×12×1/2 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.

HSS20×12×1/2 is a rectangular tube 20 in. by 12 in. with a 1/2 in. nominal wall.

At 103.3 lb per foot it is one of the 7 HSS20×12 sizes, which run from 65.87 to 195.4 lb/ft.

For strong-axis bending its section modulus is Sx = 155 in³ and its moment of inertia Ix = 1550 in⁴, with a plastic modulus Zx = 188 in³.

Detailing dimensions

Depth (Ht)20"
Width (B)12"
Nominal wall (t)1/2"

Section properties

Weight103.3 lb/ft
Area (A)28.3 in²
Ix1550 in⁴
Sx155 in³
Zx188 in³
rx7.39 in
Iy705 in⁴
Sy117 in³
Zy132 in³
ry4.99 in
J1540 in⁴

Other HSS20×12 sizes

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

HSS20×12×5/16HSS20×12×3/8HSS20×12×5/8HSS20×12×3/4HSS20×12×7/8HSS20×12×1

All HSS20×12 sizes and dimensions →

Similar weight HSS shapes

Comparable 103.3 lb/ft sections in other HSS tube sizes.

HSS24×8×1/2103.3 lb/ft · Sx 159 in³HSS22×10×1/2103.3 lb/ft · Sx 158 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 in³HSS20.000×0.500104 lb/ft · Sx 136 in³HSS24×18×3/8104.04 lb/ft · Sx 204 in³HSS22×20×3/8104.04 lb/ft · Sx 196 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 HSS20×12×1/2 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: HSS tube · Steel Beam Size Chart

Interactive drawing