U 400x100x5 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 400x100x5 (UK / Australia)

The U 400x100x5 steel profile weighs 22.9 kg/m (15.39 lb/ft), has a depth of 400 mm (15.75 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,917.762 mm². Moment of inertia Ix = 6,243.886 cm⁴, Iy = 231.798 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	100 mm	3.94 in
Thickness (t)	5 mm	0.20 in
Fillet radius (r)	5 mm	0.20 in
Weight	22.9 kg/m	15.39 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,917.76 mm²	4.523 in²
Moment of inertia (Ix)	6,243.89 cm⁴	150.01 in⁴
Moment of inertia (Iy)	231.8 cm⁴	5.57 in⁴
Elastic section modulus (Sx)	312.19 cm³	19.051 in³
Elastic section modulus (Sy)	28.55 cm³	1.742 in³
Plastic section modulus (Zx)	387.59 cm³	23.653 in³
Plastic section modulus (Zy)	37.27 cm³	2.274 in³
Radius of gyration (rx)	14.63 cm	5.759 in
Radius of gyration (ry)	2.82 cm	1.110 in