RHS 30x20x0.9 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 30x20x0.9 steel profile weighs 0.7 kg/m (0.44 lb/ft), has a depth of 30 mm (1.18 in), flange width 20 mm (0.79 in). Cross-sectional area: 84.674 mm². Moment of inertia Ix = 1.053 cm⁴, Iy = 0.563 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 0.9 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)	0.9 mm	0.04 in
Fillet radius (r)	1.8 mm	0.07 in
Weight	0.7 kg/m	0.44 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	84.67 mm²	0.131 in²
Moment of inertia (Ix)	1.05 cm⁴	0.03 in⁴
Moment of inertia (Iy)	0.56 cm⁴	0.01 in⁴
Elastic section modulus (Sx)	0.7 cm³	0.043 in³
Elastic section modulus (Sy)	0.56 cm³	0.034 in³
Plastic section modulus (Zx)	0.85 cm³	0.052 in³
Plastic section modulus (Zy)	0.64 cm³	0.039 in³
Radius of gyration (rx)	1.12 cm	0.439 in
Radius of gyration (ry)	0.82 cm	0.321 in