SHS 65x65x3.9 Açotubo · Weight & Dimensions

Açotubo, cold-formed sections · Square Hollow Section

Square Hollow Sections (SHS) are tubular profiles with equal sides, ideal for columns and compression members due to their uniform buckling resistance in all directions.

Also known as: PTR 65x65 cal 8 (México) · Caño estructural 65x65 (Argentina)

The SHS 65x65x3.9 steel profile weighs 7.2 kg/m (4.82 lb/ft), has a depth of 65 mm (2.56 in), flange width 65 mm (2.56 in). Cross-sectional area: 913.991 mm². Moment of inertia Ix = 55.6 cm⁴, Iy = 55.6 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.9 mm ≈ 9 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	65 mm	2.56 in
Width (b)	65 mm	2.56 in
Thickness (t)	3.9 mm	0.15 in
Fillet radius (r)	7.8 mm	0.31 in
Weight	7.2 kg/m	4.82 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	913.99 mm²	1.417 in²
Moment of inertia (Ix)	55.6 cm⁴	1.34 in⁴
Moment of inertia (Iy)	55.6 cm⁴	1.34 in⁴
Elastic section modulus (Sx)	17.11 cm³	1.044 in³
Elastic section modulus (Sy)	17.11 cm³	1.044 in³
Plastic section modulus (Zx)	20.62 cm³	1.259 in³
Plastic section modulus (Zy)	20.62 cm³	1.259 in³
Radius of gyration (rx)	2.47 cm	0.971 in
Radius of gyration (ry)	2.47 cm	0.971 in