RHS 90x50x2.5 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 90x50 cal 13 (México) · Caño estructural 90x50 (Argentina)

The RHS 90x50x2.5 steel profile weighs 5.2 kg/m (3.47 lb/ft), has a depth of 90 mm (3.54 in), flange width 50 mm (1.97 in). Cross-sectional area: 658.905 mm². Moment of inertia Ix = 70.262 cm⁴, Iy = 28.236 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)	50 mm	1.97 in
Thickness (t)	2.5 mm	0.10 in
Fillet radius (r)	5 mm	0.20 in
Weight	5.2 kg/m	3.47 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	658.9 mm²	1.021 in²
Moment of inertia (Ix)	70.26 cm⁴	1.69 in⁴
Moment of inertia (Iy)	28.24 cm⁴	0.68 in⁴
Elastic section modulus (Sx)	15.61 cm³	0.953 in³
Elastic section modulus (Sy)	11.29 cm³	0.689 in³
Plastic section modulus (Zx)	19.25 cm³	1.175 in³
Plastic section modulus (Zy)	12.82 cm³	0.783 in³
Radius of gyration (rx)	3.27 cm	1.286 in
Radius of gyration (ry)	2.07 cm	0.815 in