RHS 70x50x4.4 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 70x50 (México) · Caño estructural 70x50 (Argentina)

The RHS 70x50x4.4 steel profile weighs 7.3 kg/m (4.90 lb/ft), has a depth of 70 mm (2.76 in), flange width 50 mm (1.97 in). Cross-sectional area: 928.704 mm². Moment of inertia Ix = 58.404 cm⁴, Iy = 34.346 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.4 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	70 mm	2.76 in
Width (b)	50 mm	1.97 in
Thickness (t)	4.4 mm	0.17 in
Fillet radius (r)	8.8 mm	0.35 in
Weight	7.3 kg/m	4.90 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	928.7 mm²	1.439 in²
Moment of inertia (Ix)	58.4 cm⁴	1.40 in⁴
Moment of inertia (Iy)	34.35 cm⁴	0.83 in⁴
Elastic section modulus (Sx)	16.69 cm³	1.018 in³
Elastic section modulus (Sy)	13.74 cm³	0.838 in³
Plastic section modulus (Zx)	20.97 cm³	1.280 in³
Plastic section modulus (Zy)	16.57 cm³	1.011 in³
Radius of gyration (rx)	2.51 cm	0.987 in
Radius of gyration (ry)	1.92 cm	0.757 in