I 400x400x25x44.5 IAS · Weight & Dimensions

IAS, welded 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.

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Also known as: I 400x400x25x44.5 (México) · Doble T I 400x400x25x44.5 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x400x25x44.5 steel profile weighs 340.5 kg/m (228.81 lb/ft), has a depth of 400 mm (15.75 in), flange width 400 mm (15.75 in). Cross-sectional area: 43,375 mm². Moment of inertia Ix = 119,332.611 cm⁴, Iy = 47,507.161 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	400 mm	15.75 in
Web thickness (tw)	25 mm	0.98 in
Flange thickness (tf)	44.5 mm	1.75 in
Weight	340.5 kg/m	228.81 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	43,375 mm²	67.231 in²
Moment of inertia (Ix)	119,332.61 cm⁴	2866.97 in⁴
Moment of inertia (Iy)	47,507.16 cm⁴	1141.36 in⁴
Elastic section modulus (Sx)	5,966.63 cm³	364.108 in³
Elastic section modulus (Sy)	2,375.36 cm³	144.954 in³
Plastic section modulus (Zx)	6,932.41 cm³	423.043 in³
Plastic section modulus (Zy)	3,608.59 cm³	220.211 in³
Radius of gyration (rx)	16.59 cm	6.530 in
Radius of gyration (ry)	10.47 cm	4.120 in