RHS 50x25x3.5 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 50x25 cal 11 (México) · Caño estructural 50x25 (Argentina)

The RHS 50x25x3.5 steel profile weighs 3.5 kg/m (2.35 lb/ft), has a depth of 50 mm (1.97 in), flange width 25 mm (0.98 in). Cross-sectional area: 444.454 mm². Moment of inertia Ix = 12.25 cm⁴, Iy = 3.982 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)	25 mm	0.98 in
Thickness (t)	3.5 mm	0.14 in
Fillet radius (r)	7 mm	0.28 in
Weight	3.5 kg/m	2.35 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	444.45 mm²	0.689 in²
Moment of inertia (Ix)	12.25 cm⁴	0.29 in⁴
Moment of inertia (Iy)	3.98 cm⁴	0.10 in⁴
Elastic section modulus (Sx)	4.9 cm³	0.299 in³
Elastic section modulus (Sy)	3.19 cm³	0.194 in³
Plastic section modulus (Zx)	6.54 cm³	0.399 in³
Plastic section modulus (Zy)	3.96 cm³	0.241 in³
Radius of gyration (rx)	1.66 cm	0.654 in
Radius of gyration (ry)	0.95 cm	0.373 in