W 125 x 23,8 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 125 x 23,8 (México) · Doble T 125 x 23,8 (Argentina / LATAM) · UB 125 (UK / Australia)

The W 125 x 23,8 steel profile weighs 23.8 kg/m (15.99 lb/ft), has a depth of 125 mm (4.92 in), flange width 125 mm (4.92 in). Cross-sectional area: 3,031.341 mm². Moment of inertia Ix = 847.366 cm⁴, Iy = 293.502 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	125 mm	4.92 in
Width (b)	125 mm	4.92 in
Web thickness (tw)	6.5 mm	0.26 in
Flange thickness (tf)	9 mm	0.35 in
Fillet radius (r)	10 mm	0.39 in
Weight	23.8 kg/m	15.99 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,031.34 mm²	4.699 in²
Moment of inertia (Ix)	847.37 cm⁴	20.36 in⁴
Moment of inertia (Iy)	293.5 cm⁴	7.05 in⁴
Elastic section modulus (Sx)	135.58 cm³	8.274 in³
Elastic section modulus (Sy)	46.96 cm³	2.866 in³
Plastic section modulus (Zx)	153.51 cm³	9.368 in³
Plastic section modulus (Zy)	71.91 cm³	4.388 in³
Radius of gyration (rx)	5.29 cm	2.082 in
Radius of gyration (ry)	3.11 cm	1.225 in