RHS 100x40x1.6 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 16 (México) · Caño estructural 100x40 (Argentina)

The RHS 100x40x1.6 steel profile weighs 3.4 kg/m (2.27 lb/ft), has a depth of 100 mm (3.94 in), flange width 40 mm (1.57 in). Cross-sectional area: 431.167 mm². Moment of inertia Ix = 53.546 cm⁴, Iy = 12.877 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.6 mm ≈ 16 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	40 mm	1.57 in
Thickness (t)	1.6 mm	0.06 in
Fillet radius (r)	3.2 mm	0.13 in
Weight	3.4 kg/m	2.27 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	431.17 mm²	0.668 in²
Moment of inertia (Ix)	53.55 cm⁴	1.29 in⁴
Moment of inertia (Iy)	12.88 cm⁴	0.31 in⁴
Elastic section modulus (Sx)	10.71 cm³	0.654 in³
Elastic section modulus (Sy)	6.44 cm³	0.393 in³
Plastic section modulus (Zx)	13.47 cm³	0.822 in³
Plastic section modulus (Zy)	7.1 cm³	0.433 in³
Radius of gyration (rx)	3.52 cm	1.387 in
Radius of gyration (ry)	1.73 cm	0.680 in