RHS 120x80x4.5 V&M do Brasil · Weight & Dimensions

V&M do Brasil, hot-rolled 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 120x80 cal 6 (México) · Caño estructural 120x80 (Argentina)

The RHS 120x80x4.5 steel profile weighs 13.1 kg/m (8.79 lb/ft), has a depth of 120 mm (4.72 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,666.852 mm². Moment of inertia Ix = 324.58 cm⁴, Iy = 172.947 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.5 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	120 mm	4.72 in
Width (b)	80 mm	3.15 in
Thickness (t)	4.5 mm	0.18 in
Fillet radius (r)	9 mm	0.35 in
Weight	13.1 kg/m	8.79 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,666.85 mm²	2.584 in²
Moment of inertia (Ix)	324.58 cm⁴	7.80 in⁴
Moment of inertia (Iy)	172.95 cm⁴	4.16 in⁴
Elastic section modulus (Sx)	54.1 cm³	3.301 in³
Elastic section modulus (Sy)	43.24 cm³	2.638 in³
Plastic section modulus (Zx)	66.22 cm³	4.041 in³
Plastic section modulus (Zy)	50.07 cm³	3.055 in³
Radius of gyration (rx)	4.41 cm	1.737 in
Radius of gyration (ry)	3.22 cm	1.268 in