RHS 120x40x2.5 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 120x40 cal 13 (México) · Caño estructural 120x40 (Argentina)

The RHS 120x40x2.5 steel profile weighs 6.0 kg/m (4.01 lb/ft), has a depth of 120 mm (4.72 in), flange width 40 mm (1.57 in). Cross-sectional area: 758.905 mm². Moment of inertia Ix = 126.708 cm⁴, Iy = 22.298 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2.5 mm ≈ 12 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	120 mm	4.72 in
Width (b)	40 mm	1.57 in
Thickness (t)	2.5 mm	0.10 in
Fillet radius (r)	5 mm	0.20 in
Weight	6.0 kg/m	4.01 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	758.9 mm²	1.176 in²
Moment of inertia (Ix)	126.71 cm⁴	3.04 in⁴
Moment of inertia (Iy)	22.3 cm⁴	0.54 in⁴
Elastic section modulus (Sx)	21.12 cm³	1.289 in³
Elastic section modulus (Sy)	11.15 cm³	0.680 in³
Plastic section modulus (Zx)	27.32 cm³	1.667 in³
Plastic section modulus (Zy)	12.47 cm³	0.761 in³
Radius of gyration (rx)	4.09 cm	1.609 in
Radius of gyration (ry)	1.71 cm	0.675 in