CS 300x149 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 300x149 (México) · Doble T CS 300x149 (Argentina / LATAM) · UB 300 (UK / Australia)

The CS 300x149 steel profile weighs 149.2 kg/m (100.23 lb/ft), has a depth of 300 mm (11.81 in), flange width 300 mm (11.81 in). Cross-sectional area: 19,000 mm². Moment of inertia Ix = 30,520.833 cm⁴, Iy = 11,258.533 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)	25 mm	0.98 in
Weight	149.2 kg/m	100.23 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	19,000 mm²	29.450 in²
Moment of inertia (Ix)	30,520.83 cm⁴	733.26 in⁴
Moment of inertia (Iy)	11,258.53 cm⁴	270.49 in⁴
Elastic section modulus (Sx)	2,034.72 cm³	124.167 in³
Elastic section modulus (Sy)	750.57 cm³	45.803 in³
Plastic section modulus (Zx)	2,312.5 cm³	141.118 in³
Plastic section modulus (Zy)	1,141 cm³	69.628 in³
Radius of gyration (rx)	12.67 cm	4.990 in
Radius of gyration (ry)	7.7 cm	3.031 in