RHS 40x30x1.1 Acindar · Weight & Dimensions

Acindar, 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 40x30 cal 18 (México) · Caño estructural 40x30 (Argentina)

The RHS 40x30x1.1 steel profile weighs 1.1 kg/m (0.77 lb/ft), has a depth of 40 mm (1.57 in), flange width 30 mm (1.18 in). Cross-sectional area: 146.044 mm². Moment of inertia Ix = 3.366 cm⁴, Iy = 2.164 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.1 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	40 mm	1.57 in
Width (b)	30 mm	1.18 in
Thickness (t)	1.1 mm	0.04 in
Fillet radius (r)	2.2 mm	0.09 in
Weight	1.1 kg/m	0.77 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	146.04 mm²	0.226 in²
Moment of inertia (Ix)	3.37 cm⁴	0.08 in⁴
Moment of inertia (Iy)	2.16 cm⁴	0.05 in⁴
Elastic section modulus (Sx)	1.68 cm³	0.103 in³
Elastic section modulus (Sy)	1.44 cm³	0.088 in³
Plastic section modulus (Zx)	2.01 cm³	0.123 in³
Plastic section modulus (Zy)	1.65 cm³	0.101 in³
Radius of gyration (rx)	1.52 cm	0.598 in
Radius of gyration (ry)	1.22 cm	0.479 in