RHS 170x120x6.4 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 170x120 cal 3 (México) · Caño estructural 170x120 (Argentina)

The RHS 170x120x6.4 steel profile weighs 27.0 kg/m (18.16 lb/ft), has a depth of 170 mm (6.69 in), flange width 120 mm (4.72 in). Cross-sectional area: 3,442.679 mm². Moment of inertia Ix = 1,368.637 cm⁴, Iy = 797.751 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	170 mm	6.69 in
Width (b)	120 mm	4.72 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	27.0 kg/m	18.16 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,442.68 mm²	5.336 in²
Moment of inertia (Ix)	1,368.64 cm⁴	32.88 in⁴
Moment of inertia (Iy)	797.75 cm⁴	19.17 in⁴
Elastic section modulus (Sx)	161.02 cm³	9.826 in³
Elastic section modulus (Sy)	132.96 cm³	8.114 in³
Plastic section modulus (Zx)	195.88 cm³	11.954 in³
Plastic section modulus (Zy)	154.17 cm³	9.408 in³
Radius of gyration (rx)	6.31 cm	2.482 in
Radius of gyration (ry)	4.81 cm	1.895 in