C 80x40x20x3 Tecnometal · Weight & Dimensions

Tecnometal, cold-formed sections (Italy) · Cold-formed Lipped Channel

Cold-formed lipped channels (C shapes) are lightweight profiles commonly used as purlins, girts, and light framing members. The stiffening lips increase local buckling resistance. Designed per AISI S100 and NBR 14762.

Also known as: Montén de 3 pulgadas (México) · PFC 80x40x20x3 (UK / Australia)

The C 80x40x20x3 steel profile weighs 4.3 kg/m (2.86 lb/ft), has a depth of 80 mm (3.15 in), flange width 40 mm (1.57 in). Cross-sectional area: 540.789 mm². Moment of inertia Ix = 50.574 cm⁴, Iy = 12.492 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	40 mm	1.57 in
Thickness (t)	3 mm	0.12 in
Lip	20 mm	0.79 in
Fillet radius (r)	3 mm	0.12 in
Weight	4.3 kg/m	2.86 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	540.79 mm²	0.838 in²
Moment of inertia (Ix)	50.57 cm⁴	1.22 in⁴
Moment of inertia (Iy)	12.49 cm⁴	0.30 in⁴
Elastic section modulus (Sx)	12.64 cm³	0.772 in³
Elastic section modulus (Sy)	5.18 cm³	0.316 in³
Plastic section modulus (Zx)	16.24 cm³	0.991 in³
Plastic section modulus (Zy)	7.7 cm³	0.470 in³
Radius of gyration (rx)	3.06 cm	1.204 in
Radius of gyration (ry)	1.52 cm	0.598 in