RHS 120x100x5 · Weight & Dimensions

BR — 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 120x100 cal 6 (México) · Caño estructural 120x100 (Argentina)

The RHS 120x100x5 steel profile weighs 15.8 kg/m (10.62 lb/ft), has a depth of 120 mm (4.72 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,100 mm². Moment of inertia Ix = 441.75 cm⁴, Iy = 331.75 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	120 mm	4.72 in
Width (b)	100 mm	3.94 in
Thickness (t)	5 mm	0.20 in
Fillet radius (r)	10 mm	0.39 in
Weight	15.8 kg/m	10.62 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,100 mm²	3.255 in²
Moment of inertia (Ix)	441.75 cm⁴	10.61 in⁴
Moment of inertia (Iy)	331.75 cm⁴	7.97 in⁴
Elastic section modulus (Sx)	73.63 cm³	4.493 in³
Elastic section modulus (Sy)	66.35 cm³	4.049 in³
Plastic section modulus (Zx)	87.75 cm³	5.355 in³
Plastic section modulus (Zy)	77.25 cm³	4.714 in³
Radius of gyration (rx)	4.59 cm	1.807 in
Radius of gyration (ry)	3.97 cm	1.563 in