RHS 80x40x6 Tuflesa · Weight & Dimensions

Tuflesa, cold-formed 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 80x40 cal 4 (México) · Caño estructural 80x40 (Argentina)

The RHS 80x40x6 steel profile weighs 9.4 kg/m (6.35 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 1,203.292 mm². Moment of inertia Ix = 83.321 cm⁴, Iy = 26.956 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6 mm ≈ 4 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	6 mm	0.24 in
Fillet radius (r)	12 mm	0.47 in
Weight	9.4 kg/m	6.35 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,203.29 mm²	1.865 in²
Moment of inertia (Ix)	83.32 cm⁴	2.00 in⁴
Moment of inertia (Iy)	26.96 cm⁴	0.65 in⁴
Elastic section modulus (Sx)	20.83 cm³	1.271 in³
Elastic section modulus (Sy)	13.48 cm³	0.822 in³
Plastic section modulus (Zx)	28.03 cm³	1.710 in³
Plastic section modulus (Zy)	16.92 cm³	1.033 in³
Radius of gyration (rx)	2.63 cm	1.036 in
Radius of gyration (ry)	1.5 cm	0.589 in