I 450x300x8x25 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 450x300x8x25 (México) · Doble T I 450x300x8x25 (Argentina / LATAM) · UB 450 (UK / Australia)

The I 450x300x8x25 steel profile weighs 142.9 kg/m (96.01 lb/ft), has a depth of 450 mm (17.72 in), flange width 300 mm (11.81 in). Cross-sectional area: 18,200 mm². Moment of inertia Ix = 72,079.167 cm⁴, Iy = 11,251.707 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	450 mm	17.72 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	8 mm	0.31 in
Flange thickness (tf)	25 mm	0.98 in
Weight	142.9 kg/m	96.01 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	18,200 mm²	28.210 in²
Moment of inertia (Ix)	72,079.17 cm⁴	1731.70 in⁴
Moment of inertia (Iy)	11,251.71 cm⁴	270.32 in⁴
Elastic section modulus (Sx)	3,203.52 cm³	195.492 in³
Elastic section modulus (Sy)	750.11 cm³	45.775 in³
Plastic section modulus (Zx)	3,507.5 cm³	214.042 in³
Plastic section modulus (Zy)	1,131.4 cm³	69.043 in³
Radius of gyration (rx)	19.9 cm	7.835 in
Radius of gyration (ry)	7.86 cm	3.096 in