RHS 76x38x4.5 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 76x38 cal 6 (México) · Caño estructural 76x38 (Argentina)

The RHS 76x38x4.5 steel profile weighs 7.0 kg/m (4.71 lb/ft), has a depth of 76 mm (2.99 in), flange width 38 mm (1.50 in). Cross-sectional area: 892.852 mm². Moment of inertia Ix = 59.136 cm⁴, Iy = 19.426 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.5 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	76 mm	2.99 in
Width (b)	38 mm	1.50 in
Thickness (t)	4.5 mm	0.18 in
Fillet radius (r)	9 mm	0.35 in
Weight	7.0 kg/m	4.71 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	892.85 mm²	1.384 in²
Moment of inertia (Ix)	59.14 cm⁴	1.42 in⁴
Moment of inertia (Iy)	19.43 cm⁴	0.47 in⁴
Elastic section modulus (Sx)	15.56 cm³	0.950 in³
Elastic section modulus (Sy)	10.22 cm³	0.624 in³
Plastic section modulus (Zx)	20.39 cm³	1.244 in³
Plastic section modulus (Zy)	12.4 cm³	0.757 in³
Radius of gyration (rx)	2.57 cm	1.013 in
Radius of gyration (ry)	1.48 cm	0.581 in