C 300x100x20x4.5 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 12 pulgadas (México) · PFC 300x100x20x4.5 (UK / Australia)

The C 300x100x20x4.5 steel profile weighs 17.9 kg/m (12.03 lb/ft), has a depth of 300 mm (11.81 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,296.775 mm². Moment of inertia Ix = 3,036.829 cm⁴, Iy = 256.822 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	300 mm	11.81 in
Width (b)	100 mm	3.94 in
Thickness (t)	4.5 mm	0.18 in
Lip	20 mm	0.79 in
Weight	17.9 kg/m	12.03 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,296.78 mm²	3.560 in²
Moment of inertia (Ix)	3,036.83 cm⁴	72.96 in⁴
Moment of inertia (Iy)	256.82 cm⁴	6.17 in⁴
Elastic section modulus (Sx)	202.46 cm³	12.355 in³
Elastic section modulus (Sy)	34.55 cm³	2.109 in³
Plastic section modulus (Zx)	247.41 cm³	15.098 in³
Plastic section modulus (Zy)	49.13 cm³	2.998 in³
Radius of gyration (rx)	11.5 cm	4.527 in
Radius of gyration (ry)	3.34 cm	1.317 in