RHS 80x50x7.1 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 80x50 (México) · Caño estructural 80x50 (Argentina)

The RHS 80x50x7.1 steel profile weighs 11.9 kg/m (7.99 lb/ft), has a depth of 80 mm (3.15 in), flange width 50 mm (1.97 in). Cross-sectional area: 1,514.543 mm². Moment of inertia Ix = 108.993 cm⁴, Iy = 50.964 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	50 mm	1.97 in
Thickness (t)	7.1 mm	0.28 in
Fillet radius (r)	14.2 mm	0.56 in
Weight	11.9 kg/m	7.99 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,514.54 mm²	2.348 in²
Moment of inertia (Ix)	108.99 cm⁴	2.62 in⁴
Moment of inertia (Iy)	50.96 cm⁴	1.22 in⁴
Elastic section modulus (Sx)	27.25 cm³	1.663 in³
Elastic section modulus (Sy)	20.39 cm³	1.244 in³
Plastic section modulus (Zx)	36.23 cm³	2.211 in³
Plastic section modulus (Zy)	25.84 cm³	1.577 in³
Radius of gyration (rx)	2.68 cm	1.056 in
Radius of gyration (ry)	1.83 cm	0.722 in