RHS 160x80x5 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 160x80 cal 6 (México) · Caño estructural 160x80 (Argentina)

The RHS 160x80x5 steel profile weighs 17.6 kg/m (11.79 lb/ft), has a depth of 160 mm (6.30 in), flange width 80 mm (3.15 in). Cross-sectional area: 2,235.619 mm². Moment of inertia Ix = 721.69 cm⁴, Iy = 244.109 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	160 mm	6.30 in
Width (b)	80 mm	3.15 in
Thickness (t)	5 mm	0.20 in
Fillet radius (r)	10 mm	0.39 in
Weight	17.6 kg/m	11.79 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,235.62 mm²	3.465 in²
Moment of inertia (Ix)	721.69 cm⁴	17.34 in⁴
Moment of inertia (Iy)	244.11 cm⁴	5.86 in⁴
Elastic section modulus (Sx)	90.21 cm³	5.505 in³
Elastic section modulus (Sy)	61.03 cm³	3.724 in³
Plastic section modulus (Zx)	113.16 cm³	6.905 in³
Plastic section modulus (Zy)	69.74 cm³	4.256 in³
Radius of gyration (rx)	5.68 cm	2.237 in
Radius of gyration (ry)	3.3 cm	1.301 in