W 170 x 51,2 British Steel · Weight & Dimensions

British Steel, hot-rolled 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.

Also known as: IPR 170 x 51,2 (México) · Doble T 170 x 51,2 (Argentina / LATAM) · UB 170.2 (UK / Australia)

The W 170 x 51,2 steel profile weighs 51.2 kg/m (34.39 lb/ft), has a depth of 170.2 mm (6.70 in), flange width 157.4 mm (6.20 in). Cross-sectional area: 6,518.742 mm². Moment of inertia Ix = 3,227.393 cm⁴, Iy = 1,022.188 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	170.2 mm	6.70 in
Width (b)	157.4 mm	6.20 in
Web thickness (tw)	11 mm	0.43 in
Flange thickness (tf)	15.7 mm	0.62 in
Fillet radius (r)	7.6 mm	0.30 in
Weight	51.2 kg/m	34.39 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,518.74 mm²	10.104 in²
Moment of inertia (Ix)	3,227.39 cm⁴	77.54 in⁴
Moment of inertia (Iy)	1,022.19 cm⁴	24.56 in⁴
Elastic section modulus (Sx)	379.25 cm³	23.143 in³
Elastic section modulus (Sy)	129.88 cm³	7.926 in³
Plastic section modulus (Zx)	438.13 cm³	26.737 in³
Plastic section modulus (Zy)	199.04 cm³	12.146 in³
Radius of gyration (rx)	7.04 cm	2.770 in
Radius of gyration (ry)	3.96 cm	1.559 in