VS 850x120 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 850x120 (México) · Doble T VS 850x120 (Argentina / LATAM) · UB 850 (UK / Australia)

The VS 850x120 steel profile weighs 120.5 kg/m (80.98 lb/ft), has a depth of 850 mm (33.46 in), flange width 350 mm (13.78 in). Cross-sectional area: 15,350 mm². Moment of inertia Ix = 190,878.385 cm⁴, Iy = 8,935.812 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	850 mm	33.46 in
Width (b)	350 mm	13.78 in
Web thickness (tw)	8 mm	0.31 in
Flange thickness (tf)	12.5 mm	0.49 in
Weight	120.5 kg/m	80.98 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	15,350 mm²	23.793 in²
Moment of inertia (Ix)	190,878.39 cm⁴	4585.85 in⁴
Moment of inertia (Iy)	8,935.81 cm⁴	214.68 in⁴
Elastic section modulus (Sx)	4,491.26 cm³	274.074 in³
Elastic section modulus (Sy)	510.62 cm³	31.160 in³
Plastic section modulus (Zx)	5,025.31 cm³	306.665 in³
Plastic section modulus (Zy)	778.83 cm³	47.527 in³
Radius of gyration (rx)	35.26 cm	13.883 in
Radius of gyration (ry)	7.63 cm	3.004 in