RHS 70x20x1.5 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 16 (México) · Caño estructural 70x20 (Argentina)

The RHS 70x20x1.5 steel profile weighs 2.0 kg/m (1.34 lb/ft), has a depth of 70 mm (2.76 in), flange width 20 mm (0.79 in). Cross-sectional area: 255.206 mm². Moment of inertia Ix = 13.86 cm⁴, Iy = 1.869 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.5 mm ≈ 16 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	70 mm	2.76 in
Width (b)	20 mm	0.79 in
Thickness (t)	1.5 mm	0.06 in
Fillet radius (r)	3 mm	0.12 in
Weight	2.0 kg/m	1.34 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	255.21 mm²	0.396 in²
Moment of inertia (Ix)	13.86 cm⁴	0.33 in⁴
Moment of inertia (Iy)	1.87 cm⁴	0.04 in⁴
Elastic section modulus (Sx)	3.96 cm³	0.242 in³
Elastic section modulus (Sy)	1.87 cm³	0.114 in³
Plastic section modulus (Zx)	5.22 cm³	0.319 in³
Plastic section modulus (Zy)	2.1 cm³	0.128 in³
Radius of gyration (rx)	2.33 cm	0.918 in
Radius of gyration (ry)	0.86 cm	0.337 in