CHS 273.1x6.35 CISC · Weight & Dimensions

CISC, 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 273.1x6.35 steel profile weighs 41.8 kg/m (28.07 lb/ft). Cross-sectional area: 5,321.426 mm². Moment of inertia Ix = 4,735.795 cm⁴, Iy = 4,735.795 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)	273.1 mm	10.75 in
Weight	41.8 kg/m	28.07 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	5,321.43 mm²	8.248 in²
Moment of inertia (Ix)	4,735.8 cm⁴	113.78 in⁴
Moment of inertia (Iy)	4,735.8 cm⁴	113.78 in⁴
Elastic section modulus (Sx)	346.82 cm³	21.164 in³
Elastic section modulus (Sy)	346.82 cm³	21.164 in³
Plastic section modulus (Zx)	451.92 cm³	27.578 in³
Plastic section modulus (Zy)	451.92 cm³	27.578 in³
Radius of gyration (rx)	9.43 cm	3.714 in
Radius of gyration (ry)	9.43 cm	3.714 in