CHS 48x3.7 AHMSA · Weight & Dimensions

AHMSA, cold-formed sections · Circular Hollow Section

Circular Hollow Sections (CHS) are round tubular profiles with the most efficient cross-section for compression. Used for columns, trusses, and architectural structures.

Also known as: Caño estructural redondo (Argentina)

The CHS 48x3.7 steel profile weighs 4.0 kg/m (2.71 lb/ft). Cross-sectional area: 514.938 mm². Moment of inertia Ix = 12.72 cm⁴, Iy = 12.72 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.7 mm ≈ 9 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3.7 mm	0.15 in
Diameter (d)	48 mm	1.89 in
Weight	4.0 kg/m	2.71 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	514.94 mm²	0.798 in²
Moment of inertia (Ix)	12.72 cm⁴	0.31 in⁴
Moment of inertia (Iy)	12.72 cm⁴	0.31 in⁴
Elastic section modulus (Sx)	5.3 cm³	0.323 in³
Elastic section modulus (Sy)	5.3 cm³	0.323 in³
Plastic section modulus (Zx)	7.28 cm³	0.444 in³
Plastic section modulus (Zy)	7.28 cm³	0.444 in³
Radius of gyration (rx)	1.57 cm	0.619 in
Radius of gyration (ry)	1.57 cm	0.619 in