RHS 70x40x1.5 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 70x40 cal 16 (México) · Caño estructural 70x40 (Argentina)

The RHS 70x40x1.5 steel profile weighs 2.5 kg/m (1.66 lb/ft), has a depth of 70 mm (2.76 in), flange width 40 mm (1.57 in). Cross-sectional area: 315.206 mm². Moment of inertia Ix = 20.9 cm⁴, Iy = 8.827 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)	40 mm	1.57 in
Thickness (t)	1.5 mm	0.06 in
Fillet radius (r)	3 mm	0.12 in
Weight	2.5 kg/m	1.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	315.21 mm²	0.489 in²
Moment of inertia (Ix)	20.9 cm⁴	0.50 in⁴
Moment of inertia (Iy)	8.83 cm⁴	0.21 in⁴
Elastic section modulus (Sx)	5.97 cm³	0.364 in³
Elastic section modulus (Sy)	4.41 cm³	0.269 in³
Plastic section modulus (Zx)	7.28 cm³	0.444 in³
Plastic section modulus (Zy)	4.95 cm³	0.302 in³
Radius of gyration (rx)	2.57 cm	1.014 in
Radius of gyration (ry)	1.67 cm	0.659 in