W 400 x 155,4 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 400 x 155,4 (México) · Doble T 400 x 155,4 (Argentina / LATAM) · UB 400 (UK / Australia)

The W 400 x 155,4 steel profile weighs 155.4 kg/m (104.45 lb/ft), has a depth of 400 mm (15.75 in), flange width 300 mm (11.81 in). Cross-sectional area: 19,777.779 mm². Moment of inertia Ix = 57,680.525 cm⁴, Iy = 10,819.043 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	13.5 mm	0.53 in
Flange thickness (tf)	24 mm	0.94 in
Fillet radius (r)	27 mm	1.06 in
Weight	155.4 kg/m	104.45 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	19,777.78 mm²	30.656 in²
Moment of inertia (Ix)	57,680.53 cm⁴	1385.77 in⁴
Moment of inertia (Iy)	10,819.04 cm⁴	259.93 in⁴
Elastic section modulus (Sx)	2,884.03 cm³	175.995 in³
Elastic section modulus (Sy)	721.27 cm³	44.015 in³
Plastic section modulus (Zx)	3,231.74 cm³	197.214 in³
Plastic section modulus (Zy)	1,104.04 cm³	67.373 in³
Radius of gyration (rx)	17.08 cm	6.723 in
Radius of gyration (ry)	7.4 cm	2.912 in