I 1905x508x12.7x34.9 AHMSA · Weight & Dimensions

AHMSA, welded 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: I 1905x508x12.7x34.9 (México) · Doble T I 1905x508x12.7x34.9 (Argentina / LATAM) · UB 1905 (UK / Australia)

The I 1905x508x12.7x34.9 steel profile weighs 461.3 kg/m (310.00 lb/ft), has a depth of 1905 mm (75.00 in), flange width 508 mm (20.00 in). Cross-sectional area: 58,765.44 mm². Moment of inertia Ix = 3,754,696.392 cm⁴, Iy = 76,285.798 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	1905 mm	75.00 in
Width (b)	508 mm	20.00 in
Web thickness (tw)	12.7 mm	0.50 in
Flange thickness (tf)	34.9 mm	1.37 in
Weight	461.3 kg/m	310.00 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	58,765.44 mm²	91.086 in²
Moment of inertia (Ix)	3,754,696.39 cm⁴	90206.58 in⁴
Moment of inertia (Iy)	76,285.8 cm⁴	1832.77 in⁴
Elastic section modulus (Sx)	39,419.38 cm³	2405.529 in³
Elastic section modulus (Sy)	3,003.38 cm³	183.278 in³
Plastic section modulus (Zx)	43,848.65 cm³	2675.820 in³
Plastic section modulus (Zy)	4,577.22 cm³	279.320 in³
Radius of gyration (rx)	79.93 cm	31.470 in
Radius of gyration (ry)	11.39 cm	4.486 in