RHS 70x30x4 Tecnometal · Weight & Dimensions

Tecnometal, cold-formed sections (Italy) · 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 70x30 cal 8 (México) · Caño estructural 70x30 (Argentina)

The RHS 70x30x4 steel profile weighs 5.5 kg/m (3.66 lb/ft), has a depth of 70 mm (2.76 in), flange width 30 mm (1.18 in). Cross-sectional area: 694.796 mm². Moment of inertia Ix = 37.23 cm⁴, Iy = 9.418 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)	30 mm	1.18 in
Thickness (t)	4 mm	0.16 in
Fillet radius (r)	8 mm	0.31 in
Weight	5.5 kg/m	3.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	694.8 mm²	1.077 in²
Moment of inertia (Ix)	37.23 cm⁴	0.89 in⁴
Moment of inertia (Iy)	9.42 cm⁴	0.23 in⁴
Elastic section modulus (Sx)	10.64 cm³	0.649 in³
Elastic section modulus (Sy)	6.28 cm³	0.383 in³
Plastic section modulus (Zx)	14.2 cm³	0.866 in³
Plastic section modulus (Zy)	7.66 cm³	0.467 in³
Radius of gyration (rx)	2.31 cm	0.911 in
Radius of gyration (ry)	1.16 cm	0.458 in