RHS 70x40x6 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 70x40 cal 4 (México) · Caño estructural 70x40 (Argentina)

The RHS 70x40x6 steel profile weighs 8.5 kg/m (5.71 lb/ft), has a depth of 70 mm (2.76 in), flange width 40 mm (1.57 in). Cross-sectional area: 1,083.292 mm². Moment of inertia Ix = 58.201 cm⁴, Iy = 23.452 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	70 mm	2.76 in
Width (b)	40 mm	1.57 in
Thickness (t)	6 mm	0.24 in
Fillet radius (r)	12 mm	0.47 in
Weight	8.5 kg/m	5.71 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,083.29 mm²	1.679 in²
Moment of inertia (Ix)	58.2 cm⁴	1.40 in⁴
Moment of inertia (Iy)	23.45 cm⁴	0.56 in⁴
Elastic section modulus (Sx)	16.63 cm³	1.015 in³
Elastic section modulus (Sy)	11.73 cm³	0.716 in³
Plastic section modulus (Zx)	22.31 cm³	1.362 in³
Plastic section modulus (Zy)	14.88 cm³	0.908 in³
Radius of gyration (rx)	2.32 cm	0.913 in
Radius of gyration (ry)	1.47 cm	0.579 in