RHS 70x40x4 Iberian tables · Weight & Dimensions

Iberian tables, 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 70x40 cal 8 (México) · Caño estructural 70x40 (Argentina)

The RHS 70x40x4 steel profile weighs 6.1 kg/m (4.09 lb/ft), has a depth of 70 mm (2.76 in), flange width 40 mm (1.57 in). Cross-sectional area: 774.796 mm². Moment of inertia Ix = 45.952 cm⁴, Iy = 18.883 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	70 mm	2.76 in
Width (b)	40 mm	1.57 in
Thickness (t)	4 mm	0.16 in
Fillet radius (r)	8 mm	0.31 in
Weight	6.1 kg/m	4.09 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	774.8 mm²	1.201 in²
Moment of inertia (Ix)	45.95 cm⁴	1.10 in⁴
Moment of inertia (Iy)	18.88 cm⁴	0.45 in⁴
Elastic section modulus (Sx)	13.13 cm³	0.801 in³
Elastic section modulus (Sy)	9.44 cm³	0.576 in³
Plastic section modulus (Zx)	16.84 cm³	1.027 in³
Plastic section modulus (Zy)	11.33 cm³	0.692 in³
Radius of gyration (rx)	2.44 cm	0.959 in
Radius of gyration (ry)	1.56 cm	0.615 in