CS 300x109 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 300x109 (México) · Doble T CS 300x109 (Argentina / LATAM) · UB 300 (UK / Australia)

The CS 300x109 steel profile weighs 109.0 kg/m (73.27 lb/ft), has a depth of 300 mm (11.81 in), flange width 300 mm (11.81 in). Cross-sectional area: 13,889 mm². Moment of inertia Ix = 23,961.971 cm⁴, Iy = 8,551.872 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)	9.5 mm	0.37 in
Flange thickness (tf)	19 mm	0.75 in
Weight	109.0 kg/m	73.27 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	13,889 mm²	21.528 in²
Moment of inertia (Ix)	23,961.97 cm⁴	575.69 in⁴
Moment of inertia (Iy)	8,551.87 cm⁴	205.46 in⁴
Elastic section modulus (Sx)	1,597.46 cm³	97.484 in³
Elastic section modulus (Sy)	570.12 cm³	34.791 in³
Plastic section modulus (Zx)	1,764.73 cm³	107.691 in³
Plastic section modulus (Zy)	860.91 cm³	52.536 in³
Radius of gyration (rx)	13.13 cm	5.171 in
Radius of gyration (ry)	7.85 cm	3.089 in