RHS 102x51x7.9 IMCA · Weight & Dimensions

IMCA, 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 102x51 (México) · Caño estructural 102x51 (Argentina)

The RHS 102x51x7.9 steel profile weighs 15.8 kg/m (10.60 lb/ft), has a depth of 102 mm (4.02 in), flange width 51 mm (2.01 in). Cross-sectional area: 2,007.04 mm². Moment of inertia Ix = 223.819 cm⁴, Iy = 72.247 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	102 mm	4.02 in
Width (b)	51 mm	2.01 in
Thickness (t)	7.9 mm	0.31 in
Fillet radius (r)	15.8 mm	0.62 in
Weight	15.8 kg/m	10.60 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,007.04 mm²	3.111 in²
Moment of inertia (Ix)	223.82 cm⁴	5.38 in⁴
Moment of inertia (Iy)	72.25 cm⁴	1.74 in⁴
Elastic section modulus (Sx)	43.89 cm³	2.678 in³
Elastic section modulus (Sy)	28.33 cm³	1.729 in³
Plastic section modulus (Zx)	59.3 cm³	3.619 in³
Plastic section modulus (Zy)	35.76 cm³	2.182 in³
Radius of gyration (rx)	3.34 cm	1.315 in
Radius of gyration (ry)	1.9 cm	0.747 in