W 157 x 12,7 GOST · Weight & Dimensions

GOST, 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 (8.53 lb/ft), has a depth of 157 mm (6.18 in), flange width 82 mm (3.23 in). Cross-sectional area: 1,633.531 mm². Moment of inertia Ix = 697.389 cm⁴, Iy = 55.346 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)	6 mm	0.24 in
Fillet radius (r)	9 mm	0.35 in
Weight	12.7 kg/m	8.53 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,633.53 mm²	2.532 in²
Moment of inertia (Ix)	697.39 cm⁴	16.75 in⁴
Moment of inertia (Iy)	55.35 cm⁴	1.33 in⁴
Elastic section modulus (Sx)	88.84 cm³	5.421 in³
Elastic section modulus (Sy)	13.5 cm³	0.824 in³
Plastic section modulus (Zx)	100.22 cm³	6.116 in³
Plastic section modulus (Zy)	21.03 cm³	1.283 in³
Radius of gyration (rx)	6.53 cm	2.572 in
Radius of gyration (ry)	1.84 cm	0.725 in