I 400x400x15.5x44.5 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 400x400x15.5x44.5 (México) · Doble T I 400x400x15.5x44.5 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x400x15.5x44.5 steel profile weighs 317.3 kg/m (213.23 lb/ft), has a depth of 400 mm (15.75 in), flange width 400 mm (15.75 in). Cross-sectional area: 40,420.5 mm². Moment of inertia Ix = 116,951.26 cm⁴, Iy = 47,476.318 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)	15.5 mm	0.61 in
Flange thickness (tf)	44.5 mm	1.75 in
Weight	317.3 kg/m	213.23 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	40,420.5 mm²	62.652 in²
Moment of inertia (Ix)	116,951.26 cm⁴	2809.75 in⁴
Moment of inertia (Iy)	47,476.32 cm⁴	1140.62 in⁴
Elastic section modulus (Sx)	5,847.56 cm³	356.842 in³
Elastic section modulus (Sy)	2,373.82 cm³	144.860 in³
Plastic section modulus (Zx)	6,702.69 cm³	409.025 in³
Plastic section modulus (Zy)	3,578.68 cm³	218.385 in³
Radius of gyration (rx)	17.01 cm	6.697 in
Radius of gyration (ry)	10.84 cm	4.267 in