W 680 x 343,4 Arval · Weight & Dimensions

Arval, hot-rolled 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: IPR 680 x 343,4 (México) · Doble T 680 x 343,4 (Argentina / LATAM) · UB 680 (UK / Australia)

The W 680 x 343,4 steel profile weighs 343.4 kg/m (230.79 lb/ft), has a depth of 680 mm (26.77 in), flange width 309 mm (12.17 in). Cross-sectional area: 43,753.779 mm². Moment of inertia Ix = 333,716 cm⁴, Iy = 22,719.104 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	680 mm	26.77 in
Width (b)	309 mm	12.17 in
Web thickness (tw)	25 mm	0.98 in
Flange thickness (tf)	46 mm	1.81 in
Fillet radius (r)	27 mm	1.06 in
Weight	343.4 kg/m	230.79 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	43,753.78 mm²	67.818 in²
Moment of inertia (Ix)	333,716 cm⁴	8017.53 in⁴
Moment of inertia (Iy)	22,719.1 cm⁴	545.83 in⁴
Elastic section modulus (Sx)	9,815.18 cm³	598.961 in³
Elastic section modulus (Sy)	1,470.49 cm³	89.735 in³
Plastic section modulus (Zx)	11,352.78 cm³	692.792 in³
Plastic section modulus (Zy)	2,299.53 cm³	140.327 in³
Radius of gyration (rx)	27.62 cm	10.873 in
Radius of gyration (ry)	7.21 cm	2.837 in