RHS 300x180x9.5 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 300x180 (México) · Caño estructural 300x180 (Argentina)

The RHS 300x180x9.5 steel profile weighs 66.9 kg/m (44.98 lb/ft), has a depth of 300 mm (11.81 in), flange width 180 mm (7.09 in). Cross-sectional area: 8,526.586 mm². Moment of inertia Ix = 10,220.677 cm⁴, Iy = 4,626.897 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)	9.5 mm	0.37 in
Fillet radius (r)	19 mm	0.75 in
Weight	66.9 kg/m	44.98 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	8,526.59 mm²	13.216 in²
Moment of inertia (Ix)	10,220.68 cm⁴	245.55 in⁴
Moment of inertia (Iy)	4,626.9 cm⁴	111.16 in⁴
Elastic section modulus (Sx)	681.38 cm³	41.580 in³
Elastic section modulus (Sy)	514.1 cm³	31.372 in³
Plastic section modulus (Zx)	837.37 cm³	51.100 in³
Plastic section modulus (Zy)	588.55 cm³	35.916 in³
Radius of gyration (rx)	10.95 cm	4.310 in
Radius of gyration (ry)	7.37 cm	2.900 in