W 157 x 12,7 Arval · Weight & Dimensions

Arval, 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 157 x 12,7 (México) · Doble T 157 x 12,7 (Argentina / LATAM) · UB 157 (UK / Australia)

The W 157 x 12,7 steel profile weighs 12.7 kg/m (8.55 lb/ft), has a depth of 157 mm (6.18 in), flange width 82 mm (3.23 in). Cross-sectional area: 1,617.931 mm². Moment of inertia Ix = 689.276 cm⁴, Iy = 54.427 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	157 mm	6.18 in
Width (b)	82 mm	3.23 in
Web thickness (tw)	4 mm	0.16 in
Flange thickness (tf)	5.9 mm	0.23 in
Fillet radius (r)	9 mm	0.35 in
Weight	12.7 kg/m	8.55 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,617.93 mm²	2.508 in²
Moment of inertia (Ix)	689.28 cm⁴	16.56 in⁴
Moment of inertia (Iy)	54.43 cm⁴	1.31 in⁴
Elastic section modulus (Sx)	87.81 cm³	5.358 in³
Elastic section modulus (Sy)	13.27 cm³	0.810 in³
Plastic section modulus (Zx)	99.09 cm³	6.047 in³
Plastic section modulus (Zy)	20.7 cm³	1.263 in³
Radius of gyration (rx)	6.53 cm	2.570 in
Radius of gyration (ry)	1.83 cm	0.722 in