RHS 160x90x6.4 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 160x90 cal 3 (México) · Caño estructural 160x90 (Argentina)

The RHS 160x90x6.4 steel profile weighs 23.0 kg/m (15.46 lb/ft), has a depth of 160 mm (6.30 in), flange width 90 mm (3.54 in). Cross-sectional area: 2,930.679 mm². Moment of inertia Ix = 954.63 cm⁴, Iy = 387.417 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.4 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	160 mm	6.30 in
Width (b)	90 mm	3.54 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	23.0 kg/m	15.46 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,930.68 mm²	4.543 in²
Moment of inertia (Ix)	954.63 cm⁴	22.93 in⁴
Moment of inertia (Iy)	387.42 cm⁴	9.31 in⁴
Elastic section modulus (Sx)	119.33 cm³	7.282 in³
Elastic section modulus (Sy)	86.09 cm³	5.254 in³
Plastic section modulus (Zx)	149.5 cm³	9.123 in³
Plastic section modulus (Zy)	100.06 cm³	6.106 in³
Radius of gyration (rx)	5.71 cm	2.247 in
Radius of gyration (ry)	3.64 cm	1.431 in