W 100 x 20,4 Acindar · Weight & Dimensions

Acindar, 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 100 x 20,4 (México) · Doble T 100 x 20,4 (Argentina / LATAM) · UB 100 (UK / Australia)

The W 100 x 20,4 steel profile weighs 20.4 kg/m (13.72 lb/ft), has a depth of 100 mm (3.94 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,603.611 mm². Moment of inertia Ix = 449.545 cm⁴, Iy = 167.272 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	100 mm	3.94 in
Web thickness (tw)	6 mm	0.24 in
Flange thickness (tf)	10 mm	0.39 in
Fillet radius (r)	12 mm	0.47 in
Weight	20.4 kg/m	13.72 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,603.61 mm²	4.036 in²
Moment of inertia (Ix)	449.55 cm⁴	10.80 in⁴
Moment of inertia (Iy)	167.27 cm⁴	4.02 in⁴
Elastic section modulus (Sx)	89.91 cm³	5.487 in³
Elastic section modulus (Sy)	33.45 cm³	2.042 in³
Plastic section modulus (Zx)	104.21 cm³	6.360 in³
Plastic section modulus (Zy)	51.42 cm³	3.138 in³
Radius of gyration (rx)	4.16 cm	1.636 in
Radius of gyration (ry)	2.53 cm	0.998 in