RHS 80x50x4.5 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 80x50 cal 6 (México) · Caño estructural 80x50 (Argentina)

The RHS 80x50x4.5 steel profile weighs 8.1 kg/m (5.47 lb/ft), has a depth of 80 mm (3.15 in), flange width 50 mm (1.97 in). Cross-sectional area: 1,036.852 mm². Moment of inertia Ix = 83.062 cm⁴, Iy = 39.522 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	50 mm	1.97 in
Thickness (t)	4.5 mm	0.18 in
Fillet radius (r)	9 mm	0.35 in
Weight	8.1 kg/m	5.47 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,036.85 mm²	1.607 in²
Moment of inertia (Ix)	83.06 cm⁴	2.00 in⁴
Moment of inertia (Iy)	39.52 cm⁴	0.95 in⁴
Elastic section modulus (Sx)	20.77 cm³	1.267 in³
Elastic section modulus (Sy)	15.81 cm³	0.965 in³
Plastic section modulus (Zx)	26.29 cm³	1.604 in³
Plastic section modulus (Zy)	18.9 cm³	1.154 in³
Radius of gyration (rx)	2.83 cm	1.114 in
Radius of gyration (ry)	1.95 cm	0.769 in