C 125x50x20x3 SAISC · Weight & Dimensions

SAISC, 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 125x50x20x3 (UK / Australia)

The C 125x50x20x3 steel profile weighs 5.7 kg/m (3.84 lb/ft), has a depth of 125 mm (4.92 in), flange width 50 mm (1.97 in). Cross-sectional area: 735.789 mm². Moment of inertia Ix = 171.543 cm⁴, Iy = 25.324 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	125 mm	4.92 in
Width (b)	50 mm	1.97 in
Thickness (t)	3 mm	0.12 in
Lip	20 mm	0.79 in
Weight	5.7 kg/m	3.84 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	735.79 mm²	1.140 in²
Moment of inertia (Ix)	171.54 cm⁴	4.12 in⁴
Moment of inertia (Iy)	25.32 cm⁴	0.61 in⁴
Elastic section modulus (Sx)	27.45 cm³	1.675 in³
Elastic section modulus (Sy)	7.64 cm³	0.466 in³
Plastic section modulus (Zx)	34.11 cm³	2.081 in³
Plastic section modulus (Zy)	11.03 cm³	0.673 in³
Radius of gyration (rx)	4.83 cm	1.901 in
Radius of gyration (ry)	1.86 cm	0.730 in