RHS 40x30x1.9 Tecnometal · Weight & Dimensions

Tecnometal, cold-formed sections (Brazil) · 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 40x30x1.9 steel profile weighs 1.9 kg/m (1.28 lb/ft), has a depth of 40 mm (1.57 in), flange width 30 mm (1.18 in). Cross-sectional area: 242.263 mm². Moment of inertia Ix = 5.284 cm⁴, Iy = 3.376 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.9 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)	1.9 mm	0.07 in
Fillet radius (r)	3.8 mm	0.15 in
Weight	1.9 kg/m	1.28 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	242.26 mm²	0.376 in²
Moment of inertia (Ix)	5.28 cm⁴	0.13 in⁴
Moment of inertia (Iy)	3.38 cm⁴	0.08 in⁴
Elastic section modulus (Sx)	2.64 cm³	0.161 in³
Elastic section modulus (Sy)	2.25 cm³	0.137 in³
Plastic section modulus (Zx)	3.23 cm³	0.197 in³
Plastic section modulus (Zy)	2.65 cm³	0.162 in³
Radius of gyration (rx)	1.48 cm	0.581 in
Radius of gyration (ry)	1.18 cm	0.465 in