RHS 320x220x9.5 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 320x220 (México) · Caño estructural 320x220 (Argentina)

The RHS 320x220x9.5 steel profile weighs 75.9 kg/m (50.99 lb/ft), has a depth of 320 mm (12.60 in), flange width 220 mm (8.66 in). Cross-sectional area: 9,666.586 mm². Moment of inertia Ix = 13,814.321 cm⁴, Iy = 7,753.516 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	320 mm	12.60 in
Width (b)	220 mm	8.66 in
Thickness (t)	9.5 mm	0.37 in
Fillet radius (r)	19 mm	0.75 in
Weight	75.9 kg/m	50.99 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,666.59 mm²	14.983 in²
Moment of inertia (Ix)	13,814.32 cm⁴	331.89 in⁴
Moment of inertia (Iy)	7,753.52 cm⁴	186.28 in⁴
Elastic section modulus (Sx)	863.4 cm³	52.688 in³
Elastic section modulus (Sy)	704.87 cm³	43.014 in³
Plastic section modulus (Zx)	1,042.53 cm³	63.619 in³
Plastic section modulus (Zy)	806.67 cm³	49.226 in³
Radius of gyration (rx)	11.95 cm	4.706 in
Radius of gyration (ry)	8.96 cm	3.526 in