RHS 203x102x6.4 IMCA · Weight & Dimensions

IMCA, 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 203x102 cal 3 (México) · Caño estructural 203x102 (Argentina)

The RHS 203x102x6.4 steel profile weighs 28.3 kg/m (19.02 lb/ft), has a depth of 203 mm (7.99 in), flange width 102 mm (4.02 in). Cross-sectional area: 3,634.679 mm². Moment of inertia Ix = 1,889.902 cm⁴, Iy = 644.167 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.4 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	203 mm	7.99 in
Width (b)	102 mm	4.02 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	28.3 kg/m	19.02 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,634.68 mm²	5.634 in²
Moment of inertia (Ix)	1,889.9 cm⁴	45.40 in⁴
Moment of inertia (Iy)	644.17 cm⁴	15.48 in⁴
Elastic section modulus (Sx)	186.2 cm³	11.362 in³
Elastic section modulus (Sy)	126.31 cm³	7.708 in³
Plastic section modulus (Zx)	233.52 cm³	14.251 in³
Plastic section modulus (Zy)	144.41 cm³	8.813 in³
Radius of gyration (rx)	7.21 cm	2.839 in
Radius of gyration (ry)	4.21 cm	1.657 in