I 400x100x5x10 Cintac · Weight & Dimensions

Cintac, 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.

Also known as: I 400x100x5x10 (México) · Doble T I 400x100x5x10 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x100x5x10 steel profile weighs 30.6 kg/m (20.58 lb/ft), has a depth of 400 mm (15.75 in), flange width 100 mm (3.94 in). Cross-sectional area: 3,900 mm². Moment of inertia Ix = 9,893 cm⁴, Iy = 167.063 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	100 mm	3.94 in
Web thickness (tw)	5 mm	0.20 in
Flange thickness (tf)	10 mm	0.39 in
Weight	30.6 kg/m	20.58 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,900 mm²	6.045 in²
Moment of inertia (Ix)	9,893 cm⁴	237.68 in⁴
Moment of inertia (Iy)	167.06 cm⁴	4.01 in⁴
Elastic section modulus (Sx)	494.65 cm³	30.186 in³
Elastic section modulus (Sy)	33.41 cm³	2.039 in³
Plastic section modulus (Zx)	570.5 cm³	34.814 in³
Plastic section modulus (Zy)	52.38 cm³	3.196 in³
Radius of gyration (rx)	15.93 cm	6.270 in
Radius of gyration (ry)	2.07 cm	0.815 in