C 120x50x20x3.2 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 5 pulgadas (México) · PFC 120x50x20x3.2 (UK / Australia)

The C 120x50x20x3.2 steel profile weighs 6.0 kg/m (4.03 lb/ft), has a depth of 120 mm (4.72 in), flange width 50 mm (1.97 in). Cross-sectional area: 764.631 mm². Moment of inertia Ix = 164.253 cm⁴, Iy = 26.183 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	120 mm	4.72 in
Width (b)	50 mm	1.97 in
Thickness (t)	3.2 mm	0.13 in
Lip	20 mm	0.79 in
Fillet radius (r)	3.2 mm	0.13 in
Weight	6.0 kg/m	4.03 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	764.63 mm²	1.185 in²
Moment of inertia (Ix)	164.25 cm⁴	3.95 in⁴
Moment of inertia (Iy)	26.18 cm⁴	0.63 in⁴
Elastic section modulus (Sx)	27.38 cm³	1.671 in³
Elastic section modulus (Sy)	7.97 cm³	0.487 in³
Plastic section modulus (Zx)	34.2 cm³	2.087 in³
Plastic section modulus (Zy)	11.61 cm³	0.708 in³
Radius of gyration (rx)	4.63 cm	1.825 in
Radius of gyration (ry)	1.85 cm	0.729 in