CS 300x138 Usiminas · Weight & Dimensions

Usiminas, welded sections · Wide Flange (I-beam)

Wide flange beams (W shapes / I-beams) are the most common structural steel profile used in building construction. They are used for beams, columns, and girders in steel-framed buildings and bridges. Designed per AISC 360, Eurocode 3, and NBR 8800.

Also known as: CS 300x138 (México) · Doble T CS 300x138 (Argentina / LATAM) · UB 300 (UK / Australia)

The CS 300x138 steel profile weighs 137.5 kg/m (92.42 lb/ft), has a depth of 300 mm (11.81 in), flange width 300 mm (11.81 in). Cross-sectional area: 17,523.2 mm². Moment of inertia Ix = 28,165.005 cm⁴, Iy = 10,088.711 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	300 mm	11.81 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	16 mm	0.63 in
Flange thickness (tf)	22.4 mm	0.88 in
Weight	137.5 kg/m	92.42 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	17,523.2 mm²	27.161 in²
Moment of inertia (Ix)	28,165 cm⁴	676.66 in⁴
Moment of inertia (Iy)	10,088.71 cm⁴	242.38 in⁴
Elastic section modulus (Sx)	1,877.67 cm³	114.583 in³
Elastic section modulus (Sy)	672.58 cm³	41.044 in³
Plastic section modulus (Zx)	2,125.98 cm³	129.736 in³
Plastic section modulus (Zy)	1,024.33 cm³	62.509 in³
Radius of gyration (rx)	12.68 cm	4.991 in
Radius of gyration (ry)	7.59 cm	2.987 in