RHS 100x40x1.2 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 100x40 cal 18 (México) · Caño estructural 100x40 (Argentina)

The RHS 100x40x1.2 steel profile weighs 2.6 kg/m (1.72 lb/ft), has a depth of 100 mm (3.94 in), flange width 40 mm (1.57 in). Cross-sectional area: 326.532 mm². Moment of inertia Ix = 41.104 cm⁴, Iy = 9.954 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)	40 mm	1.57 in
Thickness (t)	1.2 mm	0.05 in
Fillet radius (r)	2.4 mm	0.09 in
Weight	2.6 kg/m	1.72 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	326.53 mm²	0.506 in²
Moment of inertia (Ix)	41.1 cm⁴	0.99 in⁴
Moment of inertia (Iy)	9.95 cm⁴	0.24 in⁴
Elastic section modulus (Sx)	8.22 cm³	0.502 in³
Elastic section modulus (Sy)	4.98 cm³	0.304 in³
Plastic section modulus (Zx)	10.27 cm³	0.627 in³
Plastic section modulus (Zy)	5.43 cm³	0.331 in³
Radius of gyration (rx)	3.55 cm	1.397 in
Radius of gyration (ry)	1.75 cm	0.687 in