RHS 70x30x0.9 Acindar · Weight & Dimensions

Acindar, 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 70x30 cal 18 (México) · Caño estructural 70x30 (Argentina)

The RHS 70x30x0.9 steel profile weighs 1.4 kg/m (0.92 lb/ft), has a depth of 70 mm (2.76 in), flange width 30 mm (1.18 in). Cross-sectional area: 174.674 mm². Moment of inertia Ix = 10.952 cm⁴, Iy = 2.959 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 0.9 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	70 mm	2.76 in
Width (b)	30 mm	1.18 in
Thickness (t)	0.9 mm	0.04 in
Fillet radius (r)	1.8 mm	0.07 in
Weight	1.4 kg/m	0.92 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	174.67 mm²	0.271 in²
Moment of inertia (Ix)	10.95 cm⁴	0.26 in⁴
Moment of inertia (Iy)	2.96 cm⁴	0.07 in⁴
Elastic section modulus (Sx)	3.13 cm³	0.191 in³
Elastic section modulus (Sy)	1.97 cm³	0.120 in³
Plastic section modulus (Zx)	3.89 cm³	0.237 in³
Plastic section modulus (Zy)	2.16 cm³	0.132 in³
Radius of gyration (rx)	2.5 cm	0.986 in
Radius of gyration (ry)	1.3 cm	0.512 in