RHS 100x80x2 Hiasa · Weight & Dimensions

Hiasa, 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 100x80 cal 15 (México) · Caño estructural 100x80 (Argentina)

The RHS 100x80x2 steel profile weighs 5.5 kg/m (3.66 lb/ft), has a depth of 100 mm (3.94 in), flange width 80 mm (3.15 in). Cross-sectional area: 693.699 mm². Moment of inertia Ix = 103.798 cm⁴, Iy = 73.869 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	80 mm	3.15 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	5.5 kg/m	3.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	693.7 mm²	1.075 in²
Moment of inertia (Ix)	103.8 cm⁴	2.49 in⁴
Moment of inertia (Iy)	73.87 cm⁴	1.77 in⁴
Elastic section modulus (Sx)	20.76 cm³	1.267 in³
Elastic section modulus (Sy)	18.47 cm³	1.127 in³
Plastic section modulus (Zx)	24.38 cm³	1.488 in³
Plastic section modulus (Zy)	20.97 cm³	1.280 in³
Radius of gyration (rx)	3.87 cm	1.523 in
Radius of gyration (ry)	3.26 cm	1.285 in