U 450x75x4 Cintac · Weight & Dimensions

Cintac, 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 450x75x4 (UK / Australia)

The U 450x75x4 steel profile weighs 18.4 kg/m (12.38 lb/ft), has a depth of 450 mm (17.72 in), flange width 75 mm (2.95 in). Cross-sectional area: 2,347.368 mm². Moment of inertia Ix = 5,757.949 cm⁴, Iy = 84.579 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	450 mm	17.72 in
Width (b)	75 mm	2.95 in
Thickness (t)	4 mm	0.16 in
Fillet radius (r)	4 mm	0.16 in
Weight	18.4 kg/m	12.38 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,347.37 mm²	3.638 in²
Moment of inertia (Ix)	5,757.95 cm⁴	138.33 in⁴
Moment of inertia (Iy)	84.58 cm⁴	2.03 in⁴
Elastic section modulus (Sx)	255.91 cm³	15.617 in³
Elastic section modulus (Sy)	13.23 cm³	0.808 in³
Plastic section modulus (Zx)	329.15 cm³	20.086 in³
Plastic section modulus (Zy)	17.25 cm³	1.052 in³
Radius of gyration (rx)	15.66 cm	6.166 in
Radius of gyration (ry)	1.9 cm	0.747 in