RHS 80x50x4.8 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 cal 6 (México) · Caño estructural 80x50 (Argentina)

The RHS 80x50x4.8 steel profile weighs 8.6 kg/m (5.79 lb/ft), has a depth of 80 mm (3.15 in), flange width 50 mm (1.97 in). Cross-sectional area: 1,096.507 mm². Moment of inertia Ix = 86.808 cm⁴, Iy = 41.216 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.8 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	50 mm	1.97 in
Thickness (t)	4.8 mm	0.19 in
Fillet radius (r)	9.6 mm	0.38 in
Weight	8.6 kg/m	5.79 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,096.51 mm²	1.700 in²
Moment of inertia (Ix)	86.81 cm⁴	2.09 in⁴
Moment of inertia (Iy)	41.22 cm⁴	0.99 in⁴
Elastic section modulus (Sx)	21.7 cm³	1.324 in³
Elastic section modulus (Sy)	16.49 cm³	1.006 in³
Plastic section modulus (Zx)	27.62 cm³	1.686 in³
Plastic section modulus (Zy)	19.84 cm³	1.211 in³
Radius of gyration (rx)	2.81 cm	1.108 in
Radius of gyration (ry)	1.94 cm	0.763 in