RHS 101.6x50.8x6.35 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 101.6x50.8 cal 3 (México) · Caño estructural 101.6x50.8 (Argentina)

The RHS 101.6x50.8x6.35 steel profile weighs 13.1 kg/m (8.81 lb/ft), has a depth of 101.6 mm (4.00 in), flange width 50.8 mm (2.00 in). Cross-sectional area: 1,670.351 mm². Moment of inertia Ix = 195.391 cm⁴, Iy = 63.976 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	101.6 mm	4.00 in
Width (b)	50.8 mm	2.00 in
Thickness (t)	6.3 mm	0.25 in
Fillet radius (r)	12.7 mm	0.50 in
Weight	13.1 kg/m	8.81 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,670.35 mm²	2.589 in²
Moment of inertia (Ix)	195.39 cm⁴	4.69 in⁴
Moment of inertia (Iy)	63.98 cm⁴	1.54 in⁴
Elastic section modulus (Sx)	38.46 cm³	2.347 in³
Elastic section modulus (Sy)	25.19 cm³	1.537 in³
Plastic section modulus (Zx)	50.67 cm³	3.092 in³
Plastic section modulus (Zy)	30.77 cm³	1.878 in³
Radius of gyration (rx)	3.42 cm	1.347 in
Radius of gyration (ry)	1.96 cm	0.770 in