Steel Beam Sizes / Australia / Taper Flange Beams / 125×65 TFB

125×65 TFB Steel Beam Dimensions and Properties

ASNZS Taper flange beams · v2019.11

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

125×65 TFB dimensions

Not to scale. Dimensions shown for reference.

Section properties

Symbols match the steel section finder. Imperial and metric values are shown side by side.

Property Imperial Metric
Weight 8.81 lb/ft 13.11 kg/m
Depth, d 4.92 in 125.00 mm
Flange width, bf 2.56 in 65.00 mm
tw 0.197 in 5.000 mm
tf 0.335 in 8.500 mm
Area 2.59 in² 1,670.00 mm²
Ix 10.43 in⁴ 4,340,000 mm⁴
Iy 0.81 in⁴ 337,000.00 mm⁴
Sx 4.24 in³ 69,440.00 mm³
Sy 0.63 in³ 10,369.23 mm³
Zx 4.92 in³ 80,600.00 mm³
Zy 1.05 in³ 17,200.00 mm³
rx 2.01 in 50.98 mm
ry 0.56 in 14.21 mm
J 0.10 in⁴ 40,200.00 mm⁴
Cw 4.25 in⁶ 1,140,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 125×65 TFB.

Lighter in Taper flange beams

100×45 TFB

Weight
7.2 kg/m (-45%)
Depth
100.0 mm (-20%)
Ix
1,460,000 mm⁴ (-66%)
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Source: Australian-Sections.xlsx (Sheets 1-19) · v2019.11 · Methodology