RHS 120x80x5 · 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 120x80 cal 6 (México) · Caño estructural 120x80 (Argentina)

The RHS 120x80x5 steel profile weighs 14.2 kg/m (9.54 lb/ft), has a depth of 120 mm (4.72 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,900 mm². Moment of inertia Ix = 375.58 cm⁴, Iy = 197.58 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)	80 mm	3.15 in
Thickness (t)	5 mm	0.20 in
Fillet radius (r)	10 mm	0.39 in
Weight	14.2 kg/m	9.54 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,900 mm²	2.945 in²
Moment of inertia (Ix)	375.58 cm⁴	9.02 in⁴
Moment of inertia (Iy)	197.58 cm⁴	4.75 in⁴
Elastic section modulus (Sx)	62.6 cm³	3.820 in³
Elastic section modulus (Sy)	49.4 cm³	3.015 in³
Plastic section modulus (Zx)	76.25 cm³	4.653 in³
Plastic section modulus (Zy)	57.25 cm³	3.494 in³
Radius of gyration (rx)	4.45 cm	1.752 in
Radius of gyration (ry)	3.22 cm	1.268 in