RHS 50x38x3.5 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 50x38 cal 11 (México) · Caño estructural 50x38 (Argentina)

The RHS 50x38x3.5 steel profile weighs 4.2 kg/m (2.80 lb/ft), has a depth of 50 mm (1.97 in), flange width 38 mm (1.50 in). Cross-sectional area: 535.454 mm². Moment of inertia Ix = 17.178 cm⁴, Iy = 11.13 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.5 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	50 mm	1.97 in
Width (b)	38 mm	1.50 in
Thickness (t)	3.5 mm	0.14 in
Fillet radius (r)	7 mm	0.28 in
Weight	4.2 kg/m	2.80 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	535.45 mm²	0.830 in²
Moment of inertia (Ix)	17.18 cm⁴	0.41 in⁴
Moment of inertia (Iy)	11.13 cm⁴	0.27 in⁴
Elastic section modulus (Sx)	6.87 cm³	0.419 in³
Elastic section modulus (Sy)	5.86 cm³	0.357 in³
Plastic section modulus (Zx)	8.65 cm³	0.528 in³
Plastic section modulus (Zy)	7.14 cm³	0.436 in³
Radius of gyration (rx)	1.79 cm	0.705 in
Radius of gyration (ry)	1.44 cm	0.568 in