RHS 40x35x2.5 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 40x35 cal 13 (México) · Caño estructural 40x35 (Argentina)

The RHS 40x35x2.5 steel profile weighs 2.6 kg/m (1.76 lb/ft), has a depth of 40 mm (1.57 in), flange width 35 mm (1.38 in). Cross-sectional area: 333.905 mm². Moment of inertia Ix = 7.335 cm⁴, Iy = 5.951 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	40 mm	1.57 in
Width (b)	35 mm	1.38 in
Thickness (t)	2.5 mm	0.10 in
Fillet radius (r)	5 mm	0.20 in
Weight	2.6 kg/m	1.76 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	333.9 mm²	0.518 in²
Moment of inertia (Ix)	7.33 cm⁴	0.18 in⁴
Moment of inertia (Iy)	5.95 cm⁴	0.14 in⁴
Elastic section modulus (Sx)	3.67 cm³	0.224 in³
Elastic section modulus (Sy)	3.4 cm³	0.208 in³
Plastic section modulus (Zx)	4.5 cm³	0.274 in³
Plastic section modulus (Zy)	4.1 cm³	0.250 in³
Radius of gyration (rx)	1.48 cm	0.584 in
Radius of gyration (ry)	1.33 cm	0.526 in