RHS 60x40x3.9 Açotubo · Weight & Dimensions

Açotubo, 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 60x40 cal 8 (México) · Caño estructural 60x40 (Argentina)

The RHS 60x40x3.9 steel profile weighs 5.3 kg/m (3.59 lb/ft), has a depth of 60 mm (2.36 in), flange width 40 mm (1.57 in). Cross-sectional area: 679.991 mm². Moment of inertia Ix = 30.484 cm⁴, Iy = 16.028 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.9 mm ≈ 9 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	60 mm	2.36 in
Width (b)	40 mm	1.57 in
Thickness (t)	3.9 mm	0.15 in
Fillet radius (r)	7.8 mm	0.31 in
Weight	5.3 kg/m	3.59 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	679.99 mm²	1.054 in²
Moment of inertia (Ix)	30.48 cm⁴	0.73 in⁴
Moment of inertia (Iy)	16.03 cm⁴	0.39 in⁴
Elastic section modulus (Sx)	10.16 cm³	0.620 in³
Elastic section modulus (Sy)	8.01 cm³	0.489 in³
Plastic section modulus (Zx)	12.92 cm³	0.788 in³
Plastic section modulus (Zy)	9.71 cm³	0.593 in³
Radius of gyration (rx)	2.12 cm	0.834 in
Radius of gyration (ry)	1.54 cm	0.604 in