RHS 40x30x1 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 40x30 cal 18 (México) · Caño estructural 40x30 (Argentina)

The RHS 40x30x1 steel profile weighs 1.1 kg/m (0.71 lb/ft), has a depth of 40 mm (1.57 in), flange width 30 mm (1.18 in). Cross-sectional area: 133.425 mm². Moment of inertia Ix = 3.095 cm⁴, Iy = 1.992 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	40 mm	1.57 in
Width (b)	30 mm	1.18 in
Thickness (t)	1 mm	0.04 in
Fillet radius (r)	2 mm	0.08 in
Weight	1.1 kg/m	0.71 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	133.42 mm²	0.207 in²
Moment of inertia (Ix)	3.1 cm⁴	0.07 in⁴
Moment of inertia (Iy)	1.99 cm⁴	0.05 in⁴
Elastic section modulus (Sx)	1.55 cm³	0.094 in³
Elastic section modulus (Sy)	1.33 cm³	0.081 in³
Plastic section modulus (Zx)	1.84 cm³	0.112 in³
Plastic section modulus (Zy)	1.51 cm³	0.092 in³
Radius of gyration (rx)	1.52 cm	0.600 in
Radius of gyration (ry)	1.22 cm	0.481 in