I 450x450x12x18 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 450x450x12x18 (México) · Doble T I 450x450x12x18 (Argentina / LATAM) · UB 450 (UK / Australia)

The I 450x450x12x18 steel profile weighs 166.2 kg/m (111.67 lb/ft), has a depth of 450 mm (17.72 in), flange width 450 mm (17.72 in). Cross-sectional area: 21,168 mm². Moment of inertia Ix = 82,722.254 cm⁴, Iy = 27,343.462 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	450 mm	17.72 in
Width (b)	450 mm	17.72 in
Web thickness (tw)	12 mm	0.47 in
Flange thickness (tf)	18 mm	0.71 in
Weight	166.2 kg/m	111.67 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	21,168 mm²	32.810 in²
Moment of inertia (Ix)	82,722.25 cm⁴	1987.40 in⁴
Moment of inertia (Iy)	27,343.46 cm⁴	656.93 in⁴
Elastic section modulus (Sx)	3,676.54 cm³	224.357 in³
Elastic section modulus (Sy)	1,215.26 cm³	74.160 in³
Plastic section modulus (Zx)	4,013.39 cm³	244.913 in³
Plastic section modulus (Zy)	1,837.4 cm³	112.126 in³
Radius of gyration (rx)	19.77 cm	7.783 in
Radius of gyration (ry)	11.37 cm	4.475 in