RHS 50x40x1.1 Acindar · Weight & Dimensions

Acindar, 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 50x40x1.1 steel profile weighs 1.5 kg/m (1.00 lb/ft), has a depth of 50 mm (1.97 in), flange width 40 mm (1.57 in). Cross-sectional area: 190.044 mm². Moment of inertia Ix = 7.072 cm⁴, Iy = 5.031 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.1 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)	1.1 mm	0.04 in
Fillet radius (r)	2.2 mm	0.09 in
Weight	1.5 kg/m	1.00 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	190.04 mm²	0.295 in²
Moment of inertia (Ix)	7.07 cm⁴	0.17 in⁴
Moment of inertia (Iy)	5.03 cm⁴	0.12 in⁴
Elastic section modulus (Sx)	2.83 cm³	0.173 in³
Elastic section modulus (Sy)	2.52 cm³	0.153 in³
Plastic section modulus (Zx)	3.33 cm³	0.203 in³
Plastic section modulus (Zy)	2.86 cm³	0.175 in³
Radius of gyration (rx)	1.93 cm	0.759 in
Radius of gyration (ry)	1.63 cm	0.641 in