I 350x170x8x12.5 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 350x170x8x12.5 (México) · Doble T I 350x170x8x12.5 (Argentina / LATAM) · UB 350 (UK / Australia)

The I 350x170x8x12.5 steel profile weighs 53.8 kg/m (36.13 lb/ft), has a depth of 350 mm (13.78 in), flange width 170 mm (6.69 in). Cross-sectional area: 6,850 mm². Moment of inertia Ix = 14,396.615 cm⁴, Iy = 1,024.928 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	350 mm	13.78 in
Width (b)	170 mm	6.69 in
Web thickness (tw)	8 mm	0.31 in
Flange thickness (tf)	12.5 mm	0.49 in
Weight	53.8 kg/m	36.13 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,850 mm²	10.617 in²
Moment of inertia (Ix)	14,396.61 cm⁴	345.88 in⁴
Moment of inertia (Iy)	1,024.93 cm⁴	24.62 in⁴
Elastic section modulus (Sx)	822.66 cm³	50.202 in³
Elastic section modulus (Sy)	120.58 cm³	7.358 in³
Plastic section modulus (Zx)	928.44 cm³	56.657 in³
Plastic section modulus (Zy)	185.83 cm³	11.340 in³
Radius of gyration (rx)	14.5 cm	5.708 in
Radius of gyration (ry)	3.87 cm	1.523 in