SHS 80x80x4.5 SAISC · Weight & Dimensions

SAISC, 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 80x80 cal 6 (México) · Caño estructural 80x80 (Argentina)

The SHS 80x80x4.5 steel profile weighs 10.3 kg/m (6.89 lb/ft), has a depth of 80 mm (3.15 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,306.852 mm². Moment of inertia Ix = 121.584 cm⁴, Iy = 121.584 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.5 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	80 mm	3.15 in
Thickness (t)	4.5 mm	0.18 in
Fillet radius (r)	9 mm	0.35 in
Weight	10.3 kg/m	6.89 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,306.85 mm²	2.026 in²
Moment of inertia (Ix)	121.58 cm⁴	2.92 in⁴
Moment of inertia (Iy)	121.58 cm⁴	2.92 in⁴
Elastic section modulus (Sx)	30.4 cm³	1.855 in³
Elastic section modulus (Sy)	30.4 cm³	1.855 in³
Plastic section modulus (Zx)	36.48 cm³	2.226 in³
Plastic section modulus (Zy)	36.48 cm³	2.226 in³
Radius of gyration (rx)	3.05 cm	1.201 in
Radius of gyration (ry)	3.05 cm	1.201 in