RHS 100x75x4.25 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 100x75 cal 8 (México) · Caño estructural 100x75 (Argentina)

The RHS 100x75x4.25 steel profile weighs 10.7 kg/m (7.22 lb/ft), has a depth of 100 mm (3.94 in), flange width 75 mm (2.95 in). Cross-sectional area: 1,368.735 mm². Moment of inertia Ix = 189.222 cm⁴, Iy = 121.069 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.25 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	75 mm	2.95 in
Thickness (t)	4.3 mm	0.17 in
Fillet radius (r)	8.5 mm	0.33 in
Weight	10.7 kg/m	7.22 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,368.74 mm²	2.122 in²
Moment of inertia (Ix)	189.22 cm⁴	4.55 in⁴
Moment of inertia (Iy)	121.07 cm⁴	2.91 in⁴
Elastic section modulus (Sx)	37.84 cm³	2.309 in³
Elastic section modulus (Sy)	32.29 cm³	1.970 in³
Plastic section modulus (Zx)	46.02 cm³	2.808 in³
Plastic section modulus (Zy)	37.76 cm³	2.304 in³
Radius of gyration (rx)	3.72 cm	1.464 in
Radius of gyration (ry)	2.97 cm	1.171 in