W 397 x 38,6 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 397 x 38,6 (México) · Doble T 397 x 38,6 (Argentina / LATAM) · UB 397.3 (UK / Australia)

The W 397 x 38,6 steel profile weighs 38.6 kg/m (25.95 lb/ft), has a depth of 397.3 mm (15.64 in), flange width 141.8 mm (5.58 in). Cross-sectional area: 4,922.899 mm². Moment of inertia Ix = 12,411.898 cm⁴, Iy = 409.761 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	397.3 mm	15.64 in
Width (b)	141.8 mm	5.58 in
Web thickness (tw)	6.3 mm	0.25 in
Flange thickness (tf)	8.6 mm	0.34 in
Fillet radius (r)	10.2 mm	0.40 in
Weight	38.6 kg/m	25.95 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,922.9 mm²	7.630 in²
Moment of inertia (Ix)	12,411.9 cm⁴	298.20 in⁴
Moment of inertia (Iy)	409.76 cm⁴	9.84 in⁴
Elastic section modulus (Sx)	624.81 cm³	38.129 in³
Elastic section modulus (Sy)	57.79 cm³	3.527 in³
Plastic section modulus (Zx)	718.33 cm³	43.835 in³
Plastic section modulus (Zy)	90.72 cm³	5.536 in³
Radius of gyration (rx)	15.88 cm	6.251 in
Radius of gyration (ry)	2.89 cm	1.136 in