CS 350x161 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 350x161 (México) · Doble T CS 350x161 (Argentina / LATAM) · UB 350 (UK / Australia)

The CS 350x161 steel profile weighs 161.4 kg/m (108.46 lb/ft), has a depth of 350 mm (13.78 in), flange width 350 mm (13.78 in). Cross-sectional area: 20,563.2 mm². Moment of inertia Ix = 45,926.157 cm⁴, Iy = 16,017.084 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	350 mm	13.78 in
Width (b)	350 mm	13.78 in
Web thickness (tw)	16 mm	0.63 in
Flange thickness (tf)	22.4 mm	0.88 in
Weight	161.4 kg/m	108.46 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	20,563.2 mm²	31.873 in²
Moment of inertia (Ix)	45,926.16 cm⁴	1103.38 in⁴
Moment of inertia (Iy)	16,017.08 cm⁴	384.81 in⁴
Elastic section modulus (Sx)	2,624.35 cm³	160.148 in³
Elastic section modulus (Sy)	915.26 cm³	55.853 in³
Plastic section modulus (Zx)	2,940.97 cm³	179.470 in³
Plastic section modulus (Zy)	1,391.53 cm³	84.917 in³
Radius of gyration (rx)	14.94 cm	5.884 in
Radius of gyration (ry)	8.83 cm	3.475 in