RHS 159x100x4.25 Tecnometal · Weight & Dimensions

Tecnometal, cold-formed sections (Brazil) · 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 159x100 cal 8 (México) · Caño estructural 159x100 (Argentina)

The RHS 159x100x4.25 steel profile weighs 16.4 kg/m (10.99 lb/ft), has a depth of 159 mm (6.26 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,082.735 mm². Moment of inertia Ix = 721.671 cm⁴, Iy = 352.979 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.25 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	159 mm	6.26 in
Width (b)	100 mm	3.94 in
Thickness (t)	4.3 mm	0.17 in
Fillet radius (r)	8.5 mm	0.33 in
Weight	16.4 kg/m	10.99 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,082.74 mm²	3.228 in²
Moment of inertia (Ix)	721.67 cm⁴	17.34 in⁴
Moment of inertia (Iy)	352.98 cm⁴	8.48 in⁴
Elastic section modulus (Sx)	90.78 cm³	5.540 in³
Elastic section modulus (Sy)	70.6 cm³	4.308 in³
Plastic section modulus (Zx)	110.24 cm³	6.727 in³
Plastic section modulus (Zy)	80.21 cm³	4.894 in³
Radius of gyration (rx)	5.89 cm	2.317 in
Radius of gyration (ry)	4.12 cm	1.621 in