RHS 50x30x3 · Weight & Dimensions

EN — 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 50x30 cal 11 (México) · Caño estructural 50x30 (Argentina)

The RHS 50x30x3 steel profile weighs 3.3 kg/m (2.22 lb/ft), has a depth of 50 mm (1.97 in), flange width 30 mm (1.18 in). Cross-sectional area: 444 mm². Moment of inertia Ix = 14.21 cm⁴, Iy = 6.18 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	50 mm	1.97 in
Width (b)	30 mm	1.18 in
Thickness (t)	3 mm	0.12 in
Fillet radius (r)	6 mm	0.24 in
Weight	3.3 kg/m	2.22 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	444 mm²	0.688 in²
Moment of inertia (Ix)	14.21 cm⁴	0.34 in⁴
Moment of inertia (Iy)	6.18 cm⁴	0.15 in⁴
Elastic section modulus (Sx)	5.69 cm³	0.347 in³
Elastic section modulus (Sy)	4.12 cm³	0.251 in³
Plastic section modulus (Zx)	7.13 cm³	0.435 in³
Plastic section modulus (Zy)	4.91 cm³	0.300 in³
Radius of gyration (rx)	1.79 cm	0.705 in
Radius of gyration (ry)	1.18 cm	0.465 in