CS 300x131 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 300x131 (México) · Doble T CS 300x131 (Argentina / LATAM) · UB 300 (UK / Australia)

The CS 300x131 steel profile weighs 130.6 kg/m (87.73 lb/ft), has a depth of 300 mm (11.81 in), flange width 300 mm (11.81 in). Cross-sectional area: 16,630 mm². Moment of inertia Ix = 27,680.242 cm⁴, Iy = 10,084.154 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)	12.5 mm	0.49 in
Flange thickness (tf)	22.4 mm	0.88 in
Weight	130.6 kg/m	87.73 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	16,630 mm²	25.776 in²
Moment of inertia (Ix)	27,680.24 cm⁴	665.02 in⁴
Moment of inertia (Iy)	10,084.15 cm⁴	242.27 in⁴
Elastic section modulus (Sx)	1,845.35 cm³	112.611 in³
Elastic section modulus (Sy)	672.28 cm³	41.025 in³
Plastic section modulus (Zx)	2,068.99 cm³	126.258 in³
Plastic section modulus (Zy)	1,017.97 cm³	62.121 in³
Radius of gyration (rx)	12.9 cm	5.079 in
Radius of gyration (ry)	7.79 cm	3.066 in