VS 350x31 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: VS 350x31 (México) · Doble T VS 350x31 (Argentina / LATAM) · UB 350 (UK / Australia)

The VS 350x31 steel profile weighs 30.4 kg/m (20.42 lb/ft), has a depth of 350 mm (13.78 in), flange width 180 mm (7.09 in). Cross-sectional area: 3,870.65 mm². Moment of inertia Ix = 8,219.068 cm⁴, Iy = 612.661 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	350 mm	13.78 in
Width (b)	180 mm	7.09 in
Web thickness (tw)	4.8 mm	0.19 in
Flange thickness (tf)	6.3 mm	0.25 in
Weight	30.4 kg/m	20.42 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,870.65 mm²	6.000 in²
Moment of inertia (Ix)	8,219.07 cm⁴	197.46 in⁴
Moment of inertia (Iy)	612.66 cm⁴	14.72 in⁴
Elastic section modulus (Sx)	469.66 cm³	28.661 in³
Elastic section modulus (Sy)	68.07 cm³	4.154 in³
Plastic section modulus (Zx)	524.94 cm³	32.034 in³
Plastic section modulus (Zy)	103.96 cm³	6.344 in³
Radius of gyration (rx)	14.57 cm	5.737 in
Radius of gyration (ry)	3.98 cm	1.566 in