RHS 300x180x8.2 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 300x180x8.2 steel profile weighs 58.3 kg/m (39.19 lb/ft), has a depth of 300 mm (11.81 in), flange width 180 mm (7.09 in). Cross-sectional area: 7,429.882 mm². Moment of inertia Ix = 9,021.303 cm⁴, Iy = 4,096.17 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)	8.2 mm	0.32 in
Fillet radius (r)	16.4 mm	0.65 in
Weight	58.3 kg/m	39.19 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,429.88 mm²	11.516 in²
Moment of inertia (Ix)	9,021.3 cm⁴	216.74 in⁴
Moment of inertia (Iy)	4,096.17 cm⁴	98.41 in⁴
Elastic section modulus (Sx)	601.42 cm³	36.701 in³
Elastic section modulus (Sy)	455.13 cm³	27.774 in³
Plastic section modulus (Zx)	734.75 cm³	44.837 in³
Plastic section modulus (Zy)	517.05 cm³	31.552 in³
Radius of gyration (rx)	11.02 cm	4.338 in
Radius of gyration (ry)	7.43 cm	2.923 in