I 450x300x12.5x25 IAS · Weight & Dimensions

IAS, 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.

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Also known as: I 450x300x12.5x25 (México) · Doble T I 450x300x12.5x25 (Argentina / LATAM) · UB 450 (UK / Australia)

The I 450x300x12.5x25 steel profile weighs 157.0 kg/m (105.50 lb/ft), has a depth of 450 mm (17.72 in), flange width 300 mm (11.81 in). Cross-sectional area: 20,000 mm². Moment of inertia Ix = 74,479.167 cm⁴, Iy = 11,256.51 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)	12.5 mm	0.49 in
Flange thickness (tf)	25 mm	0.98 in
Weight	157.0 kg/m	105.50 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	20,000 mm²	31.000 in²
Moment of inertia (Ix)	74,479.17 cm⁴	1789.36 in⁴
Moment of inertia (Iy)	11,256.51 cm⁴	270.44 in⁴
Elastic section modulus (Sx)	3,310.19 cm³	202.001 in³
Elastic section modulus (Sy)	750.43 cm³	45.794 in³
Plastic section modulus (Zx)	3,687.5 cm³	225.026 in³
Plastic section modulus (Zy)	1,140.63 cm³	69.606 in³
Radius of gyration (rx)	19.3 cm	7.597 in
Radius of gyration (ry)	7.5 cm	2.954 in