I 330x300x9.5x20 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 330x300x9.5x20 (México) · Doble T I 330x300x9.5x20 (Argentina / LATAM) · UB 330 (UK / Australia)

The I 330x300x9.5x20 steel profile weighs 115.4 kg/m (77.55 lb/ft), has a depth of 330 mm (12.99 in), flange width 300 mm (11.81 in). Cross-sectional area: 14,755 mm². Moment of inertia Ix = 30,800.796 cm⁴, Iy = 9,002.072 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	330 mm	12.99 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	9.5 mm	0.37 in
Flange thickness (tf)	20 mm	0.79 in
Weight	115.4 kg/m	77.55 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	14,755 mm²	22.870 in²
Moment of inertia (Ix)	30,800.8 cm⁴	739.99 in⁴
Moment of inertia (Iy)	9,002.07 cm⁴	216.27 in⁴
Elastic section modulus (Sx)	1,866.71 cm³	113.914 in³
Elastic section modulus (Sy)	600.14 cm³	36.623 in³
Plastic section modulus (Zx)	2,059.74 cm³	125.693 in³
Plastic section modulus (Zy)	906.54 cm³	55.321 in³
Radius of gyration (rx)	14.45 cm	5.688 in
Radius of gyration (ry)	7.81 cm	3.075 in