RHS 70x20x2 Hiasa · Weight & Dimensions

Hiasa, 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 70x20 cal 15 (México) · Caño estructural 70x20 (Argentina)

The RHS 70x20x2 steel profile weighs 2.6 kg/m (1.76 lb/ft), has a depth of 70 mm (2.76 in), flange width 20 mm (0.79 in). Cross-sectional area: 333.699 mm². Moment of inertia Ix = 17.599 cm⁴, Iy = 2.319 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	70 mm	2.76 in
Width (b)	20 mm	0.79 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	2.6 kg/m	1.76 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	333.7 mm²	0.517 in²
Moment of inertia (Ix)	17.6 cm⁴	0.42 in⁴
Moment of inertia (Iy)	2.32 cm⁴	0.06 in⁴
Elastic section modulus (Sx)	5.03 cm³	0.307 in³
Elastic section modulus (Sy)	2.32 cm³	0.142 in³
Plastic section modulus (Zx)	6.72 cm³	0.410 in³
Plastic section modulus (Zy)	2.68 cm³	0.163 in³
Radius of gyration (rx)	2.3 cm	0.904 in
Radius of gyration (ry)	0.83 cm	0.328 in