SHS 75x75x3.9 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 75x75 cal 8 (México) · Caño estructural 75x75 (Argentina)

The SHS 75x75x3.9 steel profile weighs 8.4 kg/m (5.64 lb/ft), has a depth of 75 mm (2.95 in), flange width 75 mm (2.95 in). Cross-sectional area: 1,069.991 mm². Moment of inertia Ix = 88.442 cm⁴, Iy = 88.442 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	75 mm	2.95 in
Width (b)	75 mm	2.95 in
Thickness (t)	3.9 mm	0.15 in
Fillet radius (r)	7.8 mm	0.31 in
Weight	8.4 kg/m	5.64 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,069.99 mm²	1.658 in²
Moment of inertia (Ix)	88.44 cm⁴	2.12 in⁴
Moment of inertia (Iy)	88.44 cm⁴	2.12 in⁴
Elastic section modulus (Sx)	23.58 cm³	1.439 in³
Elastic section modulus (Sy)	23.58 cm³	1.439 in³
Plastic section modulus (Zx)	28.16 cm³	1.719 in³
Plastic section modulus (Zy)	28.16 cm³	1.719 in³
Radius of gyration (rx)	2.88 cm	1.132 in
Radius of gyration (ry)	2.88 cm	1.132 in