U 100x75x3 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 100x75x3 (UK / Australia)

The U 100x75x3 steel profile weighs 5.7 kg/m (3.80 lb/ft), has a depth of 100 mm (3.94 in), flange width 75 mm (2.95 in). Cross-sectional area: 720.394 mm². Moment of inertia Ix = 123.769 cm⁴, Iy = 42.935 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	75 mm	2.95 in
Thickness (t)	3 mm	0.12 in
Fillet radius (r)	3 mm	0.12 in
Weight	5.7 kg/m	3.80 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	720.39 mm²	1.117 in²
Moment of inertia (Ix)	123.77 cm⁴	2.97 in⁴
Moment of inertia (Iy)	42.93 cm⁴	1.03 in⁴
Elastic section modulus (Sx)	24.75 cm³	1.511 in³
Elastic section modulus (Sy)	8.42 cm³	0.514 in³
Plastic section modulus (Zx)	28.45 cm³	1.736 in³
Plastic section modulus (Zy)	11.11 cm³	0.678 in³
Radius of gyration (rx)	4.14 cm	1.632 in
Radius of gyration (ry)	2.44 cm	0.961 in