RHS 160x80x4 · Weight & Dimensions

BR — 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 8 (México) · Caño estructural 160x80 (Argentina)

The RHS 160x80x4 steel profile weighs 14.1 kg/m (9.48 lb/ft), has a depth of 160 mm (6.30 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,856 mm². Moment of inertia Ix = 623.58 cm⁴, Iy = 209.89 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	160 mm	6.30 in
Width (b)	80 mm	3.15 in
Thickness (t)	4 mm	0.16 in
Fillet radius (r)	8 mm	0.31 in
Weight	14.1 kg/m	9.48 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,856 mm²	2.877 in²
Moment of inertia (Ix)	623.58 cm⁴	14.98 in⁴
Moment of inertia (Iy)	209.89 cm⁴	5.04 in⁴
Elastic section modulus (Sx)	77.95 cm³	4.757 in³
Elastic section modulus (Sy)	52.47 cm³	3.202 in³
Plastic section modulus (Zx)	96.13 cm³	5.866 in³
Plastic section modulus (Zy)	59.01 cm³	3.601 in³
Radius of gyration (rx)	5.8 cm	2.283 in
Radius of gyration (ry)	3.36 cm	1.323 in