CHS 38x1 Hiasa · Weight & Dimensions

Hiasa, 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 38x1 steel profile weighs 0.9 kg/m (0.61 lb/ft). Cross-sectional area: 116.239 mm². Moment of inertia Ix = 1.991 cm⁴, Iy = 1.991 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1 mm	0.04 in
Diameter (d)	38 mm	1.50 in
Weight	0.9 kg/m	0.61 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	116.24 mm²	0.180 in²
Moment of inertia (Ix)	1.99 cm⁴	0.05 in⁴
Moment of inertia (Iy)	1.99 cm⁴	0.05 in⁴
Elastic section modulus (Sx)	1.05 cm³	0.064 in³
Elastic section modulus (Sy)	1.05 cm³	0.064 in³
Plastic section modulus (Zx)	1.37 cm³	0.084 in³
Plastic section modulus (Zy)	1.37 cm³	0.084 in³
Radius of gyration (rx)	1.31 cm	0.515 in
Radius of gyration (ry)	1.31 cm	0.515 in