RHS 220x180x9.5 Açotubo · Weight & Dimensions

Açotubo, cold-formed sections · Rectangular Hollow Section

Rectangular Hollow Sections (RHS) are tubular profiles with excellent torsional resistance and aesthetic appeal. Used for columns, trusses, and exposed structural elements.

Also known as: PTR 220x180 (México) · Caño estructural 220x180 (Argentina)

The RHS 220x180x9.5 steel profile weighs 55.0 kg/m (36.96 lb/ft), has a depth of 220 mm (8.66 in), flange width 180 mm (7.09 in). Cross-sectional area: 7,006.586 mm². Moment of inertia Ix = 4,804.884 cm⁴, Iy = 3,521.085 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	220 mm	8.66 in
Width (b)	180 mm	7.09 in
Thickness (t)	9.5 mm	0.37 in
Fillet radius (r)	19 mm	0.75 in
Weight	55.0 kg/m	36.96 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,006.59 mm²	10.860 in²
Moment of inertia (Ix)	4,804.88 cm⁴	115.44 in⁴
Moment of inertia (Iy)	3,521.08 cm⁴	84.59 in⁴
Elastic section modulus (Sx)	436.81 cm³	26.656 in³
Elastic section modulus (Sy)	391.23 cm³	23.875 in³
Plastic section modulus (Zx)	526.71 cm³	32.142 in³
Plastic section modulus (Zy)	458.97 cm³	28.008 in³
Radius of gyration (rx)	8.28 cm	3.260 in
Radius of gyration (ry)	7.09 cm	2.791 in