I 400x400x12x25 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 400x400x12x25 (México) · Doble T I 400x400x12x25 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x400x12x25 steel profile weighs 190.0 kg/m (127.66 lb/ft), has a depth of 400 mm (15.75 in), flange width 400 mm (15.75 in). Cross-sectional area: 24,200 mm². Moment of inertia Ix = 74,704.167 cm⁴, Iy = 26,671.707 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)	12 mm	0.47 in
Flange thickness (tf)	25 mm	0.98 in
Weight	190.0 kg/m	127.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	24,200 mm²	37.510 in²
Moment of inertia (Ix)	74,704.17 cm⁴	1794.77 in⁴
Moment of inertia (Iy)	26,671.71 cm⁴	640.79 in⁴
Elastic section modulus (Sx)	3,735.21 cm³	227.937 in³
Elastic section modulus (Sy)	1,333.59 cm³	81.381 in³
Plastic section modulus (Zx)	4,117.5 cm³	251.266 in³
Plastic section modulus (Zy)	2,012.6 cm³	122.817 in³
Radius of gyration (rx)	17.57 cm	6.917 in
Radius of gyration (ry)	10.5 cm	4.133 in