CHS 140x18 GOST · Weight & Dimensions

GOST, 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 140x18 steel profile weighs 54.2 kg/m (36.40 lb/ft). Cross-sectional area: 6,898.937 mm². Moment of inertia Ix = 1,311.488 cm⁴, Iy = 1,311.488 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	18 mm	0.71 in
Diameter (d)	140 mm	5.51 in
Weight	54.2 kg/m	36.40 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,898.94 mm²	10.693 in²
Moment of inertia (Ix)	1,311.49 cm⁴	31.51 in⁴
Moment of inertia (Iy)	1,311.49 cm⁴	31.51 in⁴
Elastic section modulus (Sx)	187.36 cm³	11.433 in³
Elastic section modulus (Sy)	187.36 cm³	11.433 in³
Plastic section modulus (Zx)	269.86 cm³	16.468 in³
Plastic section modulus (Zy)	269.86 cm³	16.468 in³
Radius of gyration (rx)	4.36 cm	1.717 in
Radius of gyration (ry)	4.36 cm	1.717 in