RHS 70x20x2.5 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 13 (México) · Caño estructural 70x20 (Argentina)

The RHS 70x20x2.5 steel profile weighs 3.2 kg/m (2.16 lb/ft), has a depth of 70 mm (2.76 in), flange width 20 mm (0.79 in). Cross-sectional area: 408.905 mm². Moment of inertia Ix = 20.92 cm⁴, Iy = 2.693 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2.5 mm ≈ 12 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	70 mm	2.76 in
Width (b)	20 mm	0.79 in
Thickness (t)	2.5 mm	0.10 in
Fillet radius (r)	5 mm	0.20 in
Weight	3.2 kg/m	2.16 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	408.9 mm²	0.634 in²
Moment of inertia (Ix)	20.92 cm⁴	0.50 in⁴
Moment of inertia (Iy)	2.69 cm⁴	0.06 in⁴
Elastic section modulus (Sx)	5.98 cm³	0.365 in³
Elastic section modulus (Sy)	2.69 cm³	0.164 in³
Plastic section modulus (Zx)	8.1 cm³	0.494 in³
Plastic section modulus (Zy)	3.19 cm³	0.195 in³
Radius of gyration (rx)	2.26 cm	0.891 in
Radius of gyration (ry)	0.81 cm	0.320 in