RHS 90x40x1.5 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 16 (México) · Caño estructural 90x40 (Argentina)

The RHS 90x40x1.5 steel profile weighs 3.0 kg/m (1.98 lb/ft), has a depth of 90 mm (3.54 in), flange width 40 mm (1.57 in). Cross-sectional area: 375.206 mm². Moment of inertia Ix = 38.803 cm⁴, Iy = 11.051 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.5 mm ≈ 16 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	90 mm	3.54 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	3.0 kg/m	1.98 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	375.21 mm²	0.582 in²
Moment of inertia (Ix)	38.8 cm⁴	0.93 in⁴
Moment of inertia (Iy)	11.05 cm⁴	0.27 in⁴
Elastic section modulus (Sx)	8.62 cm³	0.526 in³
Elastic section modulus (Sy)	5.53 cm³	0.337 in³
Plastic section modulus (Zx)	10.73 cm³	0.655 in³
Plastic section modulus (Zy)	6.11 cm³	0.373 in³
Radius of gyration (rx)	3.22 cm	1.266 in
Radius of gyration (ry)	1.72 cm	0.676 in