SHS 51x51x4 IMCA · Weight & Dimensions

IMCA, 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 51x51 cal 8 (México) · Caño estructural 51x51 (Argentina)

The SHS 51x51x4 steel profile weighs 5.5 kg/m (3.68 lb/ft), has a depth of 51 mm (2.01 in), flange width 51 mm (2.01 in). Cross-sectional area: 710.796 mm². Moment of inertia Ix = 25.369 cm⁴, Iy = 25.369 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	51 mm	2.01 in
Width (b)	51 mm	2.01 in
Thickness (t)	4 mm	0.16 in
Fillet radius (r)	8 mm	0.31 in
Weight	5.5 kg/m	3.68 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	710.8 mm²	1.102 in²
Moment of inertia (Ix)	25.37 cm⁴	0.61 in⁴
Moment of inertia (Iy)	25.37 cm⁴	0.61 in⁴
Elastic section modulus (Sx)	9.95 cm³	0.607 in³
Elastic section modulus (Sy)	9.95 cm³	0.607 in³
Plastic section modulus (Zx)	12.27 cm³	0.749 in³
Plastic section modulus (Zy)	12.27 cm³	0.749 in³
Radius of gyration (rx)	1.89 cm	0.744 in
Radius of gyration (ry)	1.89 cm	0.744 in