RHS 50x40x3.2 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 11 (México) · Caño estructural 50x40 (Argentina)

The RHS 50x40x3.2 steel profile weighs 4.0 kg/m (2.68 lb/ft), has a depth of 50 mm (1.97 in), flange width 40 mm (1.57 in). Cross-sectional area: 508.67 mm². Moment of inertia Ix = 16.892 cm⁴, Iy = 11.894 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.2 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	50 mm	1.97 in
Width (b)	40 mm	1.57 in
Thickness (t)	3.2 mm	0.13 in
Fillet radius (r)	6.4 mm	0.25 in
Weight	4.0 kg/m	2.68 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	508.67 mm²	0.788 in²
Moment of inertia (Ix)	16.89 cm⁴	0.41 in⁴
Moment of inertia (Iy)	11.89 cm⁴	0.29 in⁴
Elastic section modulus (Sx)	6.76 cm³	0.412 in³
Elastic section modulus (Sy)	5.95 cm³	0.363 in³
Plastic section modulus (Zx)	8.39 cm³	0.512 in³
Plastic section modulus (Zy)	7.18 cm³	0.438 in³
Radius of gyration (rx)	1.82 cm	0.717 in
Radius of gyration (ry)	1.53 cm	0.602 in