RHS 200x100x4.5 SAISC · Weight & Dimensions

SAISC, 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 200x100 cal 6 (México) · Caño estructural 200x100 (Argentina)

The RHS 200x100x4.5 steel profile weighs 20.1 kg/m (13.54 lb/ft), has a depth of 200 mm (7.87 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,566.852 mm². Moment of inertia Ix = 1,331.437 cm⁴, Iy = 454.643 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.5 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	200 mm	7.87 in
Width (b)	100 mm	3.94 in
Thickness (t)	4.5 mm	0.18 in
Fillet radius (r)	9 mm	0.35 in
Weight	20.1 kg/m	13.54 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,566.85 mm²	3.979 in²
Moment of inertia (Ix)	1,331.44 cm⁴	31.99 in⁴
Moment of inertia (Iy)	454.64 cm⁴	10.92 in⁴
Elastic section modulus (Sx)	133.14 cm³	8.125 in³
Elastic section modulus (Sy)	90.93 cm³	5.549 in³
Plastic section modulus (Zx)	164.89 cm³	10.062 in³
Plastic section modulus (Zy)	102.02 cm³	6.226 in³
Radius of gyration (rx)	7.2 cm	2.835 in
Radius of gyration (ry)	4.21 cm	1.657 in