RHS 100x50x3 · 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 100x50 cal 11 (México) · Caño estructural 100x50 (Argentina)

The RHS 100x50x3 steel profile weighs 6.6 kg/m (4.44 lb/ft), has a depth of 100 mm (3.94 in), flange width 50 mm (1.97 in). Cross-sectional area: 864 mm². Moment of inertia Ix = 112.12 cm⁴, Iy = 37.44 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	50 mm	1.97 in
Thickness (t)	3 mm	0.12 in
Fillet radius (r)	6 mm	0.24 in
Weight	6.6 kg/m	4.44 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	864 mm²	1.339 in²
Moment of inertia (Ix)	112.12 cm⁴	2.69 in⁴
Moment of inertia (Iy)	37.44 cm⁴	0.90 in⁴
Elastic section modulus (Sx)	22.42 cm³	1.368 in³
Elastic section modulus (Sy)	14.98 cm³	0.914 in³
Plastic section modulus (Zx)	27.8 cm³	1.696 in³
Plastic section modulus (Zy)	17 cm³	1.037 in³
Radius of gyration (rx)	3.6 cm	1.417 in
Radius of gyration (ry)	2.08 cm	0.819 in