I 490x300x6x18 Tecnometal · Weight & Dimensions

Tecnometal, welded sections (Spain) · 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 490x300x6x18 (México) · Doble T I 490x300x6x18 (Argentina / LATAM) · UB 490 (UK / Australia)

The I 490x300x6x18 steel profile weighs 106.2 kg/m (71.34 lb/ft), has a depth of 490 mm (19.29 in), flange width 300 mm (11.81 in). Cross-sectional area: 13,524 mm². Moment of inertia Ix = 64,859.673 cm⁴, Iy = 8,100.817 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	490 mm	19.29 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	6 mm	0.24 in
Flange thickness (tf)	18 mm	0.71 in
Weight	106.2 kg/m	71.34 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	13,524 mm²	20.962 in²
Moment of inertia (Ix)	64,859.67 cm⁴	1558.25 in⁴
Moment of inertia (Iy)	8,100.82 cm⁴	194.62 in⁴
Elastic section modulus (Sx)	2,647.33 cm³	161.551 in³
Elastic section modulus (Sy)	540.05 cm³	32.956 in³
Plastic section modulus (Zx)	2,857.97 cm³	174.405 in³
Plastic section modulus (Zy)	814.09 cm³	49.679 in³
Radius of gyration (rx)	21.9 cm	8.622 in
Radius of gyration (ry)	7.74 cm	3.047 in