RHS 80x50x3.6 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 (México) · Caño estructural 80x50 (Argentina)

The RHS 80x50x3.6 steel profile weighs 6.7 kg/m (4.49 lb/ft), has a depth of 80 mm (3.15 in), flange width 50 mm (1.97 in). Cross-sectional area: 850.785 mm². Moment of inertia Ix = 70.564 cm⁴, Iy = 33.798 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.6 mm ≈ 9 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	50 mm	1.97 in
Thickness (t)	3.6 mm	0.14 in
Fillet radius (r)	7.2 mm	0.28 in
Weight	6.7 kg/m	4.49 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	850.79 mm²	1.319 in²
Moment of inertia (Ix)	70.56 cm⁴	1.70 in⁴
Moment of inertia (Iy)	33.8 cm⁴	0.81 in⁴
Elastic section modulus (Sx)	17.64 cm³	1.077 in³
Elastic section modulus (Sy)	13.52 cm³	0.825 in³
Plastic section modulus (Zx)	21.98 cm³	1.341 in³
Plastic section modulus (Zy)	15.85 cm³	0.967 in³
Radius of gyration (rx)	2.88 cm	1.134 in
Radius of gyration (ry)	1.99 cm	0.785 in