RHS 90x40x2.5 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 90x40 cal 13 (México) · Caño estructural 90x40 (Argentina)

The RHS 90x40x2.5 steel profile weighs 4.8 kg/m (3.21 lb/ft), has a depth of 90 mm (3.54 in), flange width 40 mm (1.57 in). Cross-sectional area: 608.905 mm². Moment of inertia Ix = 60.69 cm⁴, Iy = 17.017 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	90 mm	3.54 in
Width (b)	40 mm	1.57 in
Thickness (t)	2.5 mm	0.10 in
Fillet radius (r)	5 mm	0.20 in
Weight	4.8 kg/m	3.21 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	608.9 mm²	0.944 in²
Moment of inertia (Ix)	60.69 cm⁴	1.46 in⁴
Moment of inertia (Iy)	17.02 cm⁴	0.41 in⁴
Elastic section modulus (Sx)	13.49 cm³	0.823 in³
Elastic section modulus (Sy)	8.51 cm³	0.519 in³
Plastic section modulus (Zx)	17.06 cm³	1.041 in³
Plastic section modulus (Zy)	9.65 cm³	0.589 in³
Radius of gyration (rx)	3.16 cm	1.243 in
Radius of gyration (ry)	1.67 cm	0.658 in