CHS 356x9.5 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 356x9.5 steel profile weighs 81.2 kg/m (54.55 lb/ft). Cross-sectional area: 10,341.338 mm². Moment of inertia Ix = 15,531.72 cm⁴, Iy = 15,531.72 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	9.5 mm	0.37 in
Diameter (d)	356 mm	14.02 in
Weight	81.2 kg/m	54.55 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,341.34 mm²	16.029 in²
Moment of inertia (Ix)	15,531.72 cm⁴	373.15 in⁴
Moment of inertia (Iy)	15,531.72 cm⁴	373.15 in⁴
Elastic section modulus (Sx)	872.57 cm³	53.248 in³
Elastic section modulus (Sy)	872.57 cm³	53.248 in³
Plastic section modulus (Zx)	1,140.88 cm³	69.621 in³
Plastic section modulus (Zy)	1,140.88 cm³	69.621 in³
Radius of gyration (rx)	12.26 cm	4.825 in
Radius of gyration (ry)	12.26 cm	4.825 in