U 100x80x6.3 Tecnometal · Weight & Dimensions

Tecnometal, cold-formed sections (Brazil) · 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 100x80x6.3 (UK / Australia)

The U 100x80x6.3 steel profile weighs 11.8 kg/m (7.95 lb/ft), has a depth of 100 mm (3.94 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,507.44 mm². Moment of inertia Ix = 244.045 cm⁴, Iy = 98.572 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.3 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	80 mm	3.15 in
Thickness (t)	6.3 mm	0.25 in
Fillet radius (r)	6.3 mm	0.25 in
Weight	11.8 kg/m	7.95 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,507.44 mm²	2.337 in²
Moment of inertia (Ix)	244.05 cm⁴	5.86 in⁴
Moment of inertia (Iy)	98.57 cm⁴	2.37 in⁴
Elastic section modulus (Sx)	48.81 cm³	2.979 in³
Elastic section modulus (Sy)	18.91 cm³	1.154 in³
Plastic section modulus (Zx)	59.19 cm³	3.612 in³
Plastic section modulus (Zy)	25.47 cm³	1.554 in³
Radius of gyration (rx)	4.02 cm	1.584 in
Radius of gyration (ry)	2.56 cm	1.007 in