RHS 203.2x101.6x6.35 CISC · Weight & Dimensions

CISC, 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 203.2x101.6 cal 3 (México) · Caño estructural 203.2x101.6 (Argentina)

The RHS 203.2x101.6x6.35 steel profile weighs 28.3 kg/m (19.02 lb/ft), has a depth of 203.2 mm (8.00 in), flange width 101.6 mm (4.00 in). Cross-sectional area: 3,605.831 mm². Moment of inertia Ix = 1,877.437 cm⁴, Iy = 635.036 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.35 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	203.2 mm	8.00 in
Width (b)	101.6 mm	4.00 in
Thickness (t)	6.3 mm	0.25 in
Fillet radius (r)	12.7 mm	0.50 in
Weight	28.3 kg/m	19.02 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,605.83 mm²	5.589 in²
Moment of inertia (Ix)	1,877.44 cm⁴	45.11 in⁴
Moment of inertia (Iy)	635.04 cm⁴	15.26 in⁴
Elastic section modulus (Sx)	184.79 cm³	11.276 in³
Elastic section modulus (Sy)	125.01 cm³	7.628 in³
Plastic section modulus (Zx)	231.8 cm³	14.145 in³
Plastic section modulus (Zy)	142.84 cm³	8.717 in³
Radius of gyration (rx)	7.22 cm	2.841 in
Radius of gyration (ry)	4.2 cm	1.652 in