U 80x40x4 Cimagbo · Weight & Dimensions

Cimagbo, cold-formed sections · Cold-formed Channel

Cold-formed channels (U shapes) are similar to C shapes but without stiffening lips. Used for light structural framing, supports, and secondary members.

Also known as: U 80x40x4 (UK / Australia)

The U 80x40x4 steel profile weighs 4.6 kg/m (3.10 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 587.368 mm². Moment of inertia Ix = 55.433 cm⁴, Iy = 8.95 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	4 mm	0.16 in
Fillet radius (r)	4 mm	0.16 in
Weight	4.6 kg/m	3.10 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	587.37 mm²	0.910 in²
Moment of inertia (Ix)	55.43 cm⁴	1.33 in⁴
Moment of inertia (Iy)	8.95 cm⁴	0.22 in⁴
Elastic section modulus (Sx)	13.86 cm³	0.846 in³
Elastic section modulus (Sy)	3.18 cm³	0.194 in³
Plastic section modulus (Zx)	17.33 cm³	1.057 in³
Plastic section modulus (Zy)	4.25 cm³	0.259 in³
Radius of gyration (rx)	3.07 cm	1.209 in
Radius of gyration (ry)	1.23 cm	0.486 in