U 180x80x3.2 IAS · Weight & Dimensions

IAS, 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 180x80x3.2 (UK / Australia)

The U 180x80x3.2 steel profile weighs 8.3 kg/m (5.56 lb/ft), has a depth of 180 mm (7.09 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,054.315 mm². Moment of inertia Ix = 529.013 cm⁴, Iy = 66.117 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	180 mm	7.09 in
Width (b)	80 mm	3.15 in
Thickness (t)	3.2 mm	0.13 in
Weight	8.3 kg/m	5.56 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,054.32 mm²	1.634 in²
Moment of inertia (Ix)	529.01 cm⁴	12.71 in⁴
Moment of inertia (Iy)	66.12 cm⁴	1.59 in⁴
Elastic section modulus (Sx)	58.78 cm³	3.587 in³
Elastic section modulus (Sy)	11.07 cm³	0.675 in³
Plastic section modulus (Zx)	69.36 cm³	4.233 in³
Plastic section modulus (Zy)	14.5 cm³	0.885 in³
Radius of gyration (rx)	7.08 cm	2.789 in
Radius of gyration (ry)	2.5 cm	0.986 in