RHS 203x76x6.4 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 203x76 cal 3 (México) · Caño estructural 203x76 (Argentina)

The RHS 203x76x6.4 steel profile weighs 25.8 kg/m (17.32 lb/ft), has a depth of 203 mm (7.99 in), flange width 76 mm (2.99 in). Cross-sectional area: 3,301.879 mm². Moment of inertia Ix = 1,568.207 cm⁴, Iy = 328.247 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)	76 mm	2.99 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	25.8 kg/m	17.32 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,301.88 mm²	5.118 in²
Moment of inertia (Ix)	1,568.21 cm⁴	37.68 in⁴
Moment of inertia (Iy)	328.25 cm⁴	7.89 in⁴
Elastic section modulus (Sx)	154.5 cm³	9.428 in³
Elastic section modulus (Sy)	86.38 cm³	5.271 in³
Plastic section modulus (Zx)	200.81 cm³	12.254 in³
Plastic section modulus (Zy)	99.32 cm³	6.061 in³
Radius of gyration (rx)	6.89 cm	2.713 in
Radius of gyration (ry)	3.15 cm	1.241 in