I 900x300x20x40 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 900x300x20x40 (México) · Doble T I 900x300x20x40 (Argentina / LATAM) · UB 900 (UK / Australia)

The I 900x300x20x40 steel profile weighs 317.1 kg/m (213.12 lb/ft), has a depth of 900 mm (35.43 in), flange width 300 mm (11.81 in). Cross-sectional area: 40,400 mm². Moment of inertia Ix = 535,974.667 cm⁴, Iy = 18,054.667 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	900 mm	35.43 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	20 mm	0.79 in
Flange thickness (tf)	40 mm	1.57 in
Weight	317.1 kg/m	213.12 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	40,400 mm²	62.620 in²
Moment of inertia (Ix)	535,974.67 cm⁴	12876.79 in⁴
Moment of inertia (Iy)	18,054.67 cm⁴	433.76 in⁴
Elastic section modulus (Sx)	11,910.55 cm³	726.829 in³
Elastic section modulus (Sy)	1,203.64 cm³	73.451 in³
Plastic section modulus (Zx)	13,682 cm³	834.930 in³
Plastic section modulus (Zy)	1,882 cm³	114.847 in³
Radius of gyration (rx)	36.42 cm	14.340 in
Radius of gyration (ry)	6.69 cm	2.632 in