CHS 406x6.35 IMCA · Weight & Dimensions

IMCA, 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 406x6.35 steel profile weighs 62.6 kg/m (42.06 lb/ft). Cross-sectional area: 7,972.663 mm². Moment of inertia Ix = 15,921.453 cm⁴, Iy = 15,921.453 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.35 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	6.3 mm	0.25 in
Diameter (d)	406 mm	15.98 in
Weight	62.6 kg/m	42.06 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,972.66 mm²	12.358 in²
Moment of inertia (Ix)	15,921.45 cm⁴	382.51 in⁴
Moment of inertia (Iy)	15,921.45 cm⁴	382.51 in⁴
Elastic section modulus (Sx)	784.31 cm³	47.862 in³
Elastic section modulus (Sy)	784.31 cm³	47.862 in³
Plastic section modulus (Zx)	1,014.31 cm³	61.897 in³
Plastic section modulus (Zy)	1,014.31 cm³	61.897 in³
Radius of gyration (rx)	14.13 cm	5.564 in
Radius of gyration (ry)	14.13 cm	5.564 in