CHS 356x6.3 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 356x6.3 steel profile weighs 54.3 kg/m (36.51 lb/ft). Cross-sectional area: 6,921.274 mm². Moment of inertia Ix = 10,583.474 cm⁴, Iy = 10,583.474 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.3 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	6.3 mm	0.25 in
Diameter (d)	356 mm	14.02 in
Weight	54.3 kg/m	36.51 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,921.27 mm²	10.728 in²
Moment of inertia (Ix)	10,583.47 cm⁴	254.27 in⁴
Moment of inertia (Iy)	10,583.47 cm⁴	254.27 in⁴
Elastic section modulus (Sx)	594.58 cm³	36.283 in³
Elastic section modulus (Sy)	594.58 cm³	36.283 in³
Plastic section modulus (Zx)	770.51 cm³	47.020 in³
Plastic section modulus (Zy)	770.51 cm³	47.020 in³
Radius of gyration (rx)	12.37 cm	4.868 in
Radius of gyration (ry)	12.37 cm	4.868 in