I 400x300x8x22 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 400x300x8x22 (México) · Doble T I 400x300x8x22 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x300x8x22 steel profile weighs 126.0 kg/m (84.67 lb/ft), has a depth of 400 mm (15.75 in), flange width 300 mm (11.81 in). Cross-sectional area: 16,048 mm². Moment of inertia Ix = 50,212.828 cm⁴, Iy = 9,901.519 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	8 mm	0.31 in
Flange thickness (tf)	22 mm	0.87 in
Weight	126.0 kg/m	84.67 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	16,048 mm²	24.874 in²
Moment of inertia (Ix)	50,212.83 cm⁴	1206.36 in⁴
Moment of inertia (Iy)	9,901.52 cm⁴	237.88 in⁴
Elastic section modulus (Sx)	2,510.64 cm³	153.209 in³
Elastic section modulus (Sy)	660.1 cm³	40.282 in³
Plastic section modulus (Zx)	2,748.27 cm³	167.711 in³
Plastic section modulus (Zy)	995.7 cm³	60.761 in³
Radius of gyration (rx)	17.69 cm	6.964 in
Radius of gyration (ry)	7.85 cm	3.092 in