RHS 100x50x3.75 Tecnometal · Weight & Dimensions

Tecnometal, cold-formed sections (Brazil) · 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 100x50 cal 8 (México) · Caño estructural 100x50 (Argentina)

The RHS 100x50x3.75 steel profile weighs 8.1 kg/m (5.45 lb/ft), has a depth of 100 mm (3.94 in), flange width 50 mm (1.97 in). Cross-sectional area: 1,032.536 mm². Moment of inertia Ix = 127.565 cm⁴, Iy = 42.86 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.75 mm ≈ 9 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	50 mm	1.97 in
Thickness (t)	3.8 mm	0.15 in
Fillet radius (r)	7.5 mm	0.30 in
Weight	8.1 kg/m	5.45 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,032.54 mm²	1.600 in²
Moment of inertia (Ix)	127.56 cm⁴	3.06 in⁴
Moment of inertia (Iy)	42.86 cm⁴	1.03 in⁴
Elastic section modulus (Sx)	25.51 cm³	1.557 in³
Elastic section modulus (Sy)	17.14 cm³	1.046 in³
Plastic section modulus (Zx)	32.3 cm³	1.971 in³
Plastic section modulus (Zy)	19.85 cm³	1.211 in³
Radius of gyration (rx)	3.51 cm	1.384 in
Radius of gyration (ry)	2.04 cm	0.802 in