RHS 40x30x2 · 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 40x30 cal 15 (México) · Caño estructural 40x30 (Argentina)

The RHS 40x30x2 steel profile weighs 2.0 kg/m (1.32 lb/ft), has a depth of 40 mm (1.57 in), flange width 30 mm (1.18 in). Cross-sectional area: 264 mm². Moment of inertia Ix = 5.89 cm⁴, Iy = 3.73 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	40 mm	1.57 in
Width (b)	30 mm	1.18 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	2.0 kg/m	1.32 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	264 mm²	0.409 in²
Moment of inertia (Ix)	5.89 cm⁴	0.14 in⁴
Moment of inertia (Iy)	3.73 cm⁴	0.09 in⁴
Elastic section modulus (Sx)	2.95 cm³	0.180 in³
Elastic section modulus (Sy)	2.48 cm³	0.151 in³
Plastic section modulus (Zx)	3.58 cm³	0.218 in³
Plastic section modulus (Zy)	2.92 cm³	0.178 in³
Radius of gyration (rx)	1.49 cm	0.587 in
Radius of gyration (ry)	1.19 cm	0.469 in