RHS 100x50x4.8 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 100x50 cal 6 (México) · Caño estructural 100x50 (Argentina)

The RHS 100x50x4.8 steel profile weighs 10.1 kg/m (6.79 lb/ft), has a depth of 100 mm (3.94 in), flange width 50 mm (1.97 in). Cross-sectional area: 1,288.507 mm². Moment of inertia Ix = 153.659 cm⁴, Iy = 51.059 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 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	10.1 kg/m	6.79 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,288.51 mm²	1.997 in²
Moment of inertia (Ix)	153.66 cm⁴	3.69 in⁴
Moment of inertia (Iy)	51.06 cm⁴	1.23 in⁴
Elastic section modulus (Sx)	30.73 cm³	1.875 in³
Elastic section modulus (Sy)	20.42 cm³	1.246 in³
Plastic section modulus (Zx)	39.55 cm³	2.413 in³
Plastic section modulus (Zy)	24.18 cm³	1.476 in³
Radius of gyration (rx)	3.45 cm	1.360 in
Radius of gyration (ry)	1.99 cm	0.784 in