RHS 300x180x10.3 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 300x180 (México) · Caño estructural 300x180 (Argentina)

The RHS 300x180x10.3 steel profile weighs 72.1 kg/m (48.48 lb/ft), has a depth of 300 mm (11.81 in), flange width 180 mm (7.09 in). Cross-sectional area: 9,190.435 mm². Moment of inertia Ix = 10,928.792 cm⁴, Iy = 4,938.419 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	300 mm	11.81 in
Width (b)	180 mm	7.09 in
Thickness (t)	10.3 mm	0.41 in
Fillet radius (r)	20.6 mm	0.81 in
Weight	72.1 kg/m	48.48 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,190.43 mm²	14.245 in²
Moment of inertia (Ix)	10,928.79 cm⁴	262.56 in⁴
Moment of inertia (Iy)	4,938.42 cm⁴	118.65 in⁴
Elastic section modulus (Sx)	728.59 cm³	44.461 in³
Elastic section modulus (Sy)	548.71 cm³	33.485 in³
Plastic section modulus (Zx)	898.68 cm³	54.841 in³
Plastic section modulus (Zy)	631.17 cm³	38.516 in³
Radius of gyration (rx)	10.9 cm	4.293 in
Radius of gyration (ry)	7.33 cm	2.886 in