C 80x50x20x2.5 IAS · Weight & Dimensions

IAS, cold-formed sections · 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 80x50x20x2.5 (UK / Australia)

The C 80x50x20x2.5 steel profile weighs 4.0 kg/m (2.68 lb/ft), has a depth of 80 mm (3.15 in), flange width 50 mm (1.97 in). Cross-sectional area: 508.881 mm². Moment of inertia Ix = 51.237 cm⁴, Iy = 18.631 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	50 mm	1.97 in
Thickness (t)	2.5 mm	0.10 in
Lip	20 mm	0.79 in
Fillet radius (r)	2.5 mm	0.10 in
Weight	4.0 kg/m	2.68 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	508.88 mm²	0.789 in²
Moment of inertia (Ix)	51.24 cm⁴	1.23 in⁴
Moment of inertia (Iy)	18.63 cm⁴	0.45 in⁴
Elastic section modulus (Sx)	12.81 cm³	0.782 in³
Elastic section modulus (Sy)	6.28 cm³	0.383 in³
Plastic section modulus (Zx)	15.71 cm³	0.959 in³
Plastic section modulus (Zy)	8.98 cm³	0.548 in³
Radius of gyration (rx)	3.17 cm	1.249 in
Radius of gyration (ry)	1.91 cm	0.753 in