RHS 40x35x1 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 40x35 cal 18 (México) · Caño estructural 40x35 (Argentina)

The RHS 40x35x1 steel profile weighs 1.1 kg/m (0.76 lb/ft), has a depth of 40 mm (1.57 in), flange width 35 mm (1.38 in). Cross-sectional area: 143.425 mm². Moment of inertia Ix = 3.476 cm⁴, Iy = 2.834 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	40 mm	1.57 in
Width (b)	35 mm	1.38 in
Thickness (t)	1 mm	0.04 in
Fillet radius (r)	2 mm	0.08 in
Weight	1.1 kg/m	0.76 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	143.42 mm²	0.222 in²
Moment of inertia (Ix)	3.48 cm⁴	0.08 in⁴
Moment of inertia (Iy)	2.83 cm⁴	0.07 in⁴
Elastic section modulus (Sx)	1.74 cm³	0.106 in³
Elastic section modulus (Sy)	1.62 cm³	0.099 in³
Plastic section modulus (Zx)	2.04 cm³	0.124 in³
Plastic section modulus (Zy)	1.86 cm³	0.113 in³
Radius of gyration (rx)	1.56 cm	0.613 in
Radius of gyration (ry)	1.41 cm	0.553 in