I 400x250x6x18 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 400x250x6x18 (México) · Doble T I 400x250x6x18 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x250x6x18 steel profile weighs 87.8 kg/m (58.97 lb/ft), has a depth of 400 mm (15.75 in), flange width 250 mm (9.84 in). Cross-sectional area: 11,184 mm². Moment of inertia Ix = 35,268.627 cm⁴, Iy = 4,688.155 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	250 mm	9.84 in
Web thickness (tw)	6 mm	0.24 in
Flange thickness (tf)	18 mm	0.71 in
Weight	87.8 kg/m	58.97 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	11,184 mm²	17.335 in²
Moment of inertia (Ix)	35,268.63 cm⁴	847.33 in⁴
Moment of inertia (Iy)	4,688.16 cm⁴	112.63 in⁴
Elastic section modulus (Sx)	1,763.43 cm³	107.612 in³
Elastic section modulus (Sy)	375.05 cm³	22.887 in³
Plastic section modulus (Zx)	1,917.74 cm³	117.028 in³
Plastic section modulus (Zy)	565.78 cm³	34.526 in³
Radius of gyration (rx)	17.76 cm	6.991 in
Radius of gyration (ry)	6.47 cm	2.549 in