CHS 165.1x4 SAISC · Weight & Dimensions

SAISC, 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 165.1x4 steel profile weighs 15.9 kg/m (10.68 lb/ft). Cross-sectional area: 2,024.442 mm². Moment of inertia Ix = 657.165 cm⁴, Iy = 657.165 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Thickness (t)	4 mm	0.16 in
Diameter (d)	165.1 mm	6.50 in
Weight	15.9 kg/m	10.68 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,024.44 mm²	3.138 in²
Moment of inertia (Ix)	657.16 cm⁴	15.79 in⁴
Moment of inertia (Iy)	657.16 cm⁴	15.79 in⁴
Elastic section modulus (Sx)	79.61 cm³	4.858 in³
Elastic section modulus (Sy)	79.61 cm³	4.858 in³
Plastic section modulus (Zx)	103.83 cm³	6.336 in³
Plastic section modulus (Zy)	103.83 cm³	6.336 in³
Radius of gyration (rx)	5.7 cm	2.243 in
Radius of gyration (ry)	5.7 cm	2.243 in