I 690x300x20x25 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 690x300x20x25 (México) · Doble T I 690x300x20x25 (Argentina / LATAM) · UB 690 (UK / Australia)

The I 690x300x20x25 steel profile weighs 218.2 kg/m (146.65 lb/ft), has a depth of 690 mm (27.17 in), flange width 300 mm (11.81 in). Cross-sectional area: 27,800 mm². Moment of inertia Ix = 209,603.167 cm⁴, Iy = 11,292.667 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	690 mm	27.17 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	20 mm	0.79 in
Flange thickness (tf)	25 mm	0.98 in
Weight	218.2 kg/m	146.65 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	27,800 mm²	43.090 in²
Moment of inertia (Ix)	209,603.17 cm⁴	5035.72 in⁴
Moment of inertia (Iy)	11,292.67 cm⁴	271.31 in⁴
Elastic section modulus (Sx)	6,075.45 cm³	370.749 in³
Elastic section modulus (Sy)	752.84 cm³	45.942 in³
Plastic section modulus (Zx)	7,035.5 cm³	429.334 in³
Plastic section modulus (Zy)	1,189 cm³	72.558 in³
Radius of gyration (rx)	27.46 cm	10.810 in
Radius of gyration (ry)	6.37 cm	2.509 in