W 428 x 283,1 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 428 x 283,1 (México) · Doble T 428 x 283,1 (Argentina / LATAM) · UB 428 (UK / Australia)

The W 428 x 283,1 steel profile weighs 283.1 kg/m (190.28 lb/ft), has a depth of 428 mm (16.85 in), flange width 407 mm (16.02 in). Cross-sectional area: 36,065.469 mm². Moment of inertia Ix = 119,204.078 cm⁴, Iy = 39,361.648 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	428 mm	16.85 in
Width (b)	407 mm	16.02 in
Web thickness (tw)	20 mm	0.79 in
Flange thickness (tf)	35 mm	1.38 in
Fillet radius (r)	22 mm	0.87 in
Weight	283.1 kg/m	190.28 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	36,065.47 mm²	55.901 in²
Moment of inertia (Ix)	119,204.08 cm⁴	2863.88 in⁴
Moment of inertia (Iy)	39,361.65 cm⁴	945.66 in⁴
Elastic section modulus (Sx)	5,570.28 cm³	339.921 in³
Elastic section modulus (Sy)	1,934.23 cm³	118.035 in³
Plastic section modulus (Zx)	6,311.43 cm³	385.149 in³
Plastic section modulus (Zy)	2,940.85 cm³	179.463 in³
Radius of gyration (rx)	18.18 cm	7.158 in
Radius of gyration (ry)	10.45 cm	4.113 in