W 180 x 18,8 SAISC · Weight & Dimensions

SAISC, 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 180 x 18,8 (México) · Doble T 180 x 18,8 (Argentina / LATAM) · UB 180 (UK / Australia)

The W 180 x 18,8 steel profile weighs 18.8 kg/m (12.61 lb/ft), has a depth of 180 mm (7.09 in), flange width 91 mm (3.58 in). Cross-sectional area: 2,394.731 mm². Moment of inertia Ix = 1,316.959 cm⁴, Iy = 100.85 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	180 mm	7.09 in
Width (b)	91 mm	3.58 in
Web thickness (tw)	5.3 mm	0.21 in
Flange thickness (tf)	8 mm	0.31 in
Fillet radius (r)	9 mm	0.35 in
Weight	18.8 kg/m	12.61 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,394.73 mm²	3.712 in²
Moment of inertia (Ix)	1,316.96 cm⁴	31.64 in⁴
Moment of inertia (Iy)	100.85 cm⁴	2.42 in⁴
Elastic section modulus (Sx)	146.33 cm³	8.930 in³
Elastic section modulus (Sy)	22.16 cm³	1.353 in³
Plastic section modulus (Zx)	166.41 cm³	10.155 in³
Plastic section modulus (Zy)	34.6 cm³	2.111 in³
Radius of gyration (rx)	7.42 cm	2.920 in
Radius of gyration (ry)	2.05 cm	0.808 in