RHS 70x40x2 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 15 (México) · Caño estructural 70x40 (Argentina)

The RHS 70x40x2 steel profile weighs 3.3 kg/m (2.18 lb/ft), has a depth of 70 mm (2.76 in), flange width 40 mm (1.57 in). Cross-sectional area: 413.699 mm². Moment of inertia Ix = 26.85 cm⁴, Iy = 11.276 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)	40 mm	1.57 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	3.3 kg/m	2.18 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	413.7 mm²	0.641 in²
Moment of inertia (Ix)	26.85 cm⁴	0.65 in⁴
Moment of inertia (Iy)	11.28 cm⁴	0.27 in⁴
Elastic section modulus (Sx)	7.67 cm³	0.468 in³
Elastic section modulus (Sy)	5.64 cm³	0.344 in³
Plastic section modulus (Zx)	9.44 cm³	0.576 in³
Plastic section modulus (Zy)	6.41 cm³	0.391 in³
Radius of gyration (rx)	2.55 cm	1.003 in
Radius of gyration (ry)	1.65 cm	0.650 in