W 250 x 20,4 KS · Weight & Dimensions

KS, 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 250 x 20,4 (México) · Doble T 250 x 20,4 (Argentina / LATAM) · UB 250 (UK / Australia)

The W 250 x 20,4 steel profile weighs 20.4 kg/m (13.68 lb/ft), has a depth of 250 mm (9.84 in), flange width 125 mm (4.92 in). Cross-sectional area: 2,592.46 mm². Moment of inertia Ix = 2,768.422 cm⁴, Iy = 195.519 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	250 mm	9.84 in
Width (b)	125 mm	4.92 in
Web thickness (tw)	4.5 mm	0.18 in
Flange thickness (tf)	6 mm	0.24 in
Fillet radius (r)	5 mm	0.20 in
Weight	20.4 kg/m	13.68 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,592.46 mm²	4.018 in²
Moment of inertia (Ix)	2,768.42 cm⁴	66.51 in⁴
Moment of inertia (Iy)	195.52 cm⁴	4.70 in⁴
Elastic section modulus (Sx)	221.47 cm³	13.515 in³
Elastic section modulus (Sy)	31.28 cm³	1.909 in³
Plastic section modulus (Zx)	249.25 cm³	15.210 in³
Plastic section modulus (Zy)	48.15 cm³	2.938 in³
Radius of gyration (rx)	10.33 cm	4.068 in
Radius of gyration (ry)	2.75 cm	1.081 in