RHS 350x220x9.5 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 350x220 (México) · Caño estructural 350x220 (Argentina)

The RHS 350x220x9.5 steel profile weighs 80.4 kg/m (54.00 lb/ft), has a depth of 350 mm (13.78 in), flange width 220 mm (8.66 in). Cross-sectional area: 10,236.586 mm². Moment of inertia Ix = 17,163.679 cm⁴, Iy = 8,385.366 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	350 mm	13.78 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	80.4 kg/m	54.00 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,236.59 mm²	15.867 in²
Moment of inertia (Ix)	17,163.68 cm⁴	412.36 in⁴
Moment of inertia (Iy)	8,385.37 cm⁴	201.46 in⁴
Elastic section modulus (Sx)	980.78 cm³	59.851 in³
Elastic section modulus (Sy)	762.31 cm³	46.519 in³
Plastic section modulus (Zx)	1,191.8 cm³	72.729 in³
Plastic section modulus (Zy)	866.67 cm³	52.887 in³
Radius of gyration (rx)	12.95 cm	5.098 in
Radius of gyration (ry)	9.05 cm	3.563 in