I 400x100x4x6 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 400x100x4x6 (México) · Doble T I 400x100x4x6 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x100x4x6 steel profile weighs 21.6 kg/m (14.51 lb/ft), has a depth of 400 mm (15.75 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,752 mm². Moment of inertia Ix = 6,604.476 cm⁴, Iy = 100.207 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)	4 mm	0.16 in
Flange thickness (tf)	6 mm	0.24 in
Weight	21.6 kg/m	14.51 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,752 mm²	4.266 in²
Moment of inertia (Ix)	6,604.48 cm⁴	158.67 in⁴
Moment of inertia (Iy)	100.21 cm⁴	2.41 in⁴
Elastic section modulus (Sx)	330.22 cm³	20.152 in³
Elastic section modulus (Sy)	20.04 cm³	1.223 in³
Plastic section modulus (Zx)	386.94 cm³	23.613 in³
Plastic section modulus (Zy)	31.55 cm³	1.925 in³
Radius of gyration (rx)	15.49 cm	6.099 in
Radius of gyration (ry)	1.91 cm	0.751 in