RHS 30x20x1.1 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 30x20 cal 18 (México) · Caño estructural 30x20 (Argentina)

The RHS 30x20x1.1 steel profile weighs 0.8 kg/m (0.54 lb/ft), has a depth of 30 mm (1.18 in), flange width 20 mm (0.79 in). Cross-sectional area: 102.044 mm². Moment of inertia Ix = 1.245 cm⁴, Iy = 0.664 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	30 mm	1.18 in
Width (b)	20 mm	0.79 in
Thickness (t)	1.1 mm	0.04 in
Fillet radius (r)	2.2 mm	0.09 in
Weight	0.8 kg/m	0.54 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	102.04 mm²	0.158 in²
Moment of inertia (Ix)	1.24 cm⁴	0.03 in⁴
Moment of inertia (Iy)	0.66 cm⁴	0.02 in⁴
Elastic section modulus (Sx)	0.83 cm³	0.051 in³
Elastic section modulus (Sy)	0.66 cm³	0.040 in³
Plastic section modulus (Zx)	1.01 cm³	0.062 in³
Plastic section modulus (Zy)	0.77 cm³	0.047 in³
Radius of gyration (rx)	1.1 cm	0.435 in
Radius of gyration (ry)	0.81 cm	0.317 in