RHS 50x40x1 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 50x40 cal 18 (México) · Caño estructural 50x40 (Argentina)

The RHS 50x40x1 steel profile weighs 1.4 kg/m (0.91 lb/ft), has a depth of 50 mm (1.97 in), flange width 40 mm (1.57 in). Cross-sectional area: 173.425 mm². Moment of inertia Ix = 6.487 cm⁴, Iy = 4.617 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	50 mm	1.97 in
Width (b)	40 mm	1.57 in
Thickness (t)	1 mm	0.04 in
Fillet radius (r)	2 mm	0.08 in
Weight	1.4 kg/m	0.91 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	173.42 mm²	0.269 in²
Moment of inertia (Ix)	6.49 cm⁴	0.16 in⁴
Moment of inertia (Iy)	4.62 cm⁴	0.11 in⁴
Elastic section modulus (Sx)	2.59 cm³	0.158 in³
Elastic section modulus (Sy)	2.31 cm³	0.141 in³
Plastic section modulus (Zx)	3.05 cm³	0.186 in³
Plastic section modulus (Zy)	2.62 cm³	0.160 in³
Radius of gyration (rx)	1.93 cm	0.761 in
Radius of gyration (ry)	1.63 cm	0.642 in