RHS 100x20x1.2 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 100x20 cal 18 (México) · Caño estructural 100x20 (Argentina)

The RHS 100x20x1.2 steel profile weighs 2.2 kg/m (1.47 lb/ft), has a depth of 100 mm (3.94 in), flange width 20 mm (0.79 in). Cross-sectional area: 278.532 mm². Moment of inertia Ix = 29.39 cm⁴, Iy = 2.197 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.2 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	20 mm	0.79 in
Thickness (t)	1.2 mm	0.05 in
Fillet radius (r)	2.4 mm	0.09 in
Weight	2.2 kg/m	1.47 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	278.53 mm²	0.432 in²
Moment of inertia (Ix)	29.39 cm⁴	0.71 in⁴
Moment of inertia (Iy)	2.2 cm⁴	0.05 in⁴
Elastic section modulus (Sx)	5.88 cm³	0.359 in³
Elastic section modulus (Sy)	2.2 cm³	0.134 in³
Plastic section modulus (Zx)	7.9 cm³	0.482 in³
Plastic section modulus (Zy)	2.41 cm³	0.147 in³
Radius of gyration (rx)	3.25 cm	1.279 in
Radius of gyration (ry)	0.89 cm	0.350 in