RHS 35x20x1 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 35x20 cal 18 (México) · Caño estructural 35x20 (Argentina)

The RHS 35x20x1 steel profile weighs 0.8 kg/m (0.54 lb/ft), has a depth of 35 mm (1.38 in), flange width 20 mm (0.79 in). Cross-sectional area: 103.425 mm². Moment of inertia Ix = 1.678 cm⁴, Iy = 0.705 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	35 mm	1.38 in
Width (b)	20 mm	0.79 in
Thickness (t)	1 mm	0.04 in
Fillet radius (r)	2 mm	0.08 in
Weight	0.8 kg/m	0.54 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	103.42 mm²	0.160 in²
Moment of inertia (Ix)	1.68 cm⁴	0.04 in⁴
Moment of inertia (Iy)	0.7 cm⁴	0.02 in⁴
Elastic section modulus (Sx)	0.96 cm³	0.059 in³
Elastic section modulus (Sy)	0.7 cm³	0.043 in³
Plastic section modulus (Zx)	1.18 cm³	0.072 in³
Plastic section modulus (Zy)	0.8 cm³	0.049 in³
Radius of gyration (rx)	1.27 cm	0.501 in
Radius of gyration (ry)	0.83 cm	0.325 in