RHS 40x25x0.8 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 40x25 (México) · Caño estructural 40x25 (Argentina)

The RHS 40x25x0.8 steel profile weighs 0.8 kg/m (0.52 lb/ft), has a depth of 40 mm (1.57 in), flange width 25 mm (0.98 in). Cross-sectional area: 99.792 mm². Moment of inertia Ix = 2.227 cm⁴, Iy = 1.083 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 0.8 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	40 mm	1.57 in
Width (b)	25 mm	0.98 in
Thickness (t)	0.8 mm	0.03 in
Fillet radius (r)	1.6 mm	0.06 in
Weight	0.8 kg/m	0.52 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	99.79 mm²	0.155 in²
Moment of inertia (Ix)	2.23 cm⁴	0.05 in⁴
Moment of inertia (Iy)	1.08 cm⁴	0.03 in⁴
Elastic section modulus (Sx)	1.11 cm³	0.068 in³
Elastic section modulus (Sy)	0.87 cm³	0.053 in³
Plastic section modulus (Zx)	1.34 cm³	0.082 in³
Plastic section modulus (Zy)	0.97 cm³	0.059 in³
Radius of gyration (rx)	1.49 cm	0.588 in
Radius of gyration (ry)	1.04 cm	0.410 in