W 640 x 189,7 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 640 x 189,7 (México) · Doble T 640 x 189,7 (Argentina / LATAM) · UB 640 (UK / Australia)

The W 640 x 189,7 steel profile weighs 189.7 kg/m (127.45 lb/ft), has a depth of 640 mm (25.20 in), flange width 300 mm (11.81 in). Cross-sectional area: 24,163.779 mm². Moment of inertia Ix = 175,178.236 cm⁴, Iy = 11,723.882 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	640 mm	25.20 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	13.5 mm	0.53 in
Flange thickness (tf)	26 mm	1.02 in
Fillet radius (r)	27 mm	1.06 in
Weight	189.7 kg/m	127.45 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	24,163.78 mm²	37.454 in²
Moment of inertia (Ix)	175,178.24 cm⁴	4208.66 in⁴
Moment of inertia (Iy)	11,723.88 cm⁴	281.67 in⁴
Elastic section modulus (Sx)	5,474.32 cm³	334.065 in³
Elastic section modulus (Sy)	781.59 cm³	47.696 in³
Plastic section modulus (Zx)	6,136.29 cm³	374.461 in³
Plastic section modulus (Zy)	1,204.79 cm³	73.521 in³
Radius of gyration (rx)	26.93 cm	10.600 in
Radius of gyration (ry)	6.97 cm	2.742 in