RHS 90x50x3.5 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 11 (México) · Caño estructural 90x50 (Argentina)

The RHS 90x50x3.5 steel profile weighs 7.1 kg/m (4.74 lb/ft), has a depth of 90 mm (3.54 in), flange width 50 mm (1.97 in). Cross-sectional area: 899.454 mm². Moment of inertia Ix = 92.66 cm⁴, Iy = 36.892 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.5 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	90 mm	3.54 in
Width (b)	50 mm	1.97 in
Thickness (t)	3.5 mm	0.14 in
Fillet radius (r)	7 mm	0.28 in
Weight	7.1 kg/m	4.74 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	899.45 mm²	1.394 in²
Moment of inertia (Ix)	92.66 cm⁴	2.23 in⁴
Moment of inertia (Iy)	36.89 cm⁴	0.89 in⁴
Elastic section modulus (Sx)	20.59 cm³	1.257 in³
Elastic section modulus (Sy)	14.76 cm³	0.901 in³
Plastic section modulus (Zx)	25.79 cm³	1.574 in³
Plastic section modulus (Zy)	17.12 cm³	1.044 in³
Radius of gyration (rx)	3.21 cm	1.264 in
Radius of gyration (ry)	2.03 cm	0.797 in