Steel Beam Sizes / AISC / M-Shapes / M12.5x11.6

M12.5x11.6 Steel Beam Dimensions and Properties

AISC Miscellaneous beams · v16.0

Analyze in Beam Calculator Back to M-Shapes

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

Units

Section diagram

M12.5x11.6 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 11.60 lb/ft 17.30 kg/m
Depth, d 12.50 in 318.00 mm
Flange width, bf 3.50 in 88.90 mm
tw 0.155 in 3.940 mm
tf 0.211 in 5.360 mm
Area 3.40 in² 2,190.00 mm²
Ix 80.30 in⁴ 33,400,000 mm⁴
Iy 1.51 in⁴ 629,000.00 mm⁴
Sx 12.80 in³ 210,000.00 mm³
Sy 0.86 in³ 14,200.00 mm³
Zx 15.00 in³ 246,000.00 mm³
Zy 1.37 in³ 22,500.00 mm³
rx 4.86 in 123.00 mm
ry 0.67 in 16.90 mm
J 0.04 in⁴ 17,200.00 mm⁴
Cw 57.10 in⁶ 15,300,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus M12.5x11.6.

Lighter in M12

M12x10.8

Weight
10.8 lb/ft (-6.9%)
Depth
12.00 in (-4.0%)
Ix
66.7 in⁴ (-17%)

Heavier in M12

M12x11.8

Weight
11.8 lb/ft (+1.7%)
Depth
12.00 in (-4.0%)
Ix
72.2 in⁴ (-10%)

Closest Iₓ in M12

M12.5x12.4

Weight
12.4 lb/ft (+6.9%)
Depth
12.50 in (0.0%)
Ix
89.3 in⁴ (+11%)

Similar weight in M10

M10x9

Weight
9.0 lb/ft (-22%)
Depth
10.00 in (-20%)
Ix
39.0 in⁴ (-51%)
Analyze in Beam Calculator Compare in M-Shapes finder

Source: AISC Shapes Database v16.0 · Methodology