RHS 180x140x5 GOST · Weight & Dimensions

GOST, 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 180x140 cal 6 (México) · Caño estructural 180x140 (Argentina)

The RHS 180x140x5 steel profile weighs 23.8 kg/m (16.01 lb/ft), has a depth of 180 mm (7.09 in), flange width 140 mm (5.51 in). Cross-sectional area: 3,035.619 mm². Moment of inertia Ix = 1,430.533 cm⁴, Iy = 972.893 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	180 mm	7.09 in
Width (b)	140 mm	5.51 in
Thickness (t)	5 mm	0.20 in
Fillet radius (r)	10 mm	0.39 in
Weight	23.8 kg/m	16.01 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,035.62 mm²	4.705 in²
Moment of inertia (Ix)	1,430.53 cm⁴	34.37 in⁴
Moment of inertia (Iy)	972.89 cm⁴	23.37 in⁴
Elastic section modulus (Sx)	158.95 cm³	9.700 in³
Elastic section modulus (Sy)	138.98 cm³	8.481 in³
Plastic section modulus (Zx)	189.02 cm³	11.535 in³
Plastic section modulus (Zy)	159.3 cm³	9.721 in³
Radius of gyration (rx)	6.86 cm	2.703 in
Radius of gyration (ry)	5.66 cm	2.229 in