RHS 25x20x1 Hiasa · Weight & Dimensions

Hiasa, 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 25x20 cal 18 (México) · Caño estructural 25x20 (Argentina)

The RHS 25x20x1 steel profile weighs 0.7 kg/m (0.44 lb/ft), has a depth of 25 mm (0.98 in), flange width 20 mm (0.79 in). Cross-sectional area: 83.425 mm². Moment of inertia Ix = 0.74 cm⁴, Iy = 0.524 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	25 mm	0.98 in
Width (b)	20 mm	0.79 in
Thickness (t)	1 mm	0.04 in
Fillet radius (r)	2 mm	0.08 in
Weight	0.7 kg/m	0.44 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	83.42 mm²	0.129 in²
Moment of inertia (Ix)	0.74 cm⁴	0.02 in⁴
Moment of inertia (Iy)	0.52 cm⁴	0.01 in⁴
Elastic section modulus (Sx)	0.59 cm³	0.036 in³
Elastic section modulus (Sy)	0.52 cm³	0.032 in³
Plastic section modulus (Zx)	0.71 cm³	0.043 in³
Plastic section modulus (Zy)	0.61 cm³	0.037 in³
Radius of gyration (rx)	0.94 cm	0.371 in
Radius of gyration (ry)	0.79 cm	0.312 in