Steel Beam Sizes / AISC / MC Channels / MC12x45

MC12x45 Steel Beam Dimensions and Properties

AISC Miscellaneous channels · v16.0

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

Units

Section diagram

MC12x45 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 45.00 lb/ft 67.00 kg/m
Depth, d 12.00 in 305.00 mm
Flange width, bf 4.01 in 102.00 mm
tw 0.710 in 18.000 mm
tf 0.700 in 17.800 mm
Area 13.20 in² 8,520.00 mm²
Ix 251.00 in⁴ 104,000,000 mm⁴
Iy 15.80 in⁴ 6,580,000 mm⁴
Sx 41.90 in³ 687,000.00 mm³
Sy 5.30 in³ 86,900.00 mm³
Zx 52.00 in³ 852,000.00 mm³
Zy 10.10 in³ 166,000.00 mm³
rx 4.36 in 111.00 mm
ry 1.09 in 27.70 mm
J 2.33 in⁴ 970,000.00 mm⁴
Cw 373.00 in⁶ 100,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus MC12x45.

Lighter in MC12

MC12x40

Weight
40.0 lb/ft (-11%)
Depth
12.00 in (0.0%)
Ix
234.0 in⁴ (-6.8%)

Heavier in MC12

MC12x50

Weight
50.0 lb/ft (+11%)
Depth
12.00 in (0.0%)
Ix
269.0 in⁴ (+7.2%)

Closest Iₓ in MC12

MC12x35

Weight
35.0 lb/ft (-22%)
Depth
12.00 in (0.0%)
Ix
216.0 in⁴ (-14%)

Similar weight in MC10

MC10x41.1

Weight
41.1 lb/ft (-8.7%)
Depth
10.00 in (-17%)
Ix
157.0 in⁴ (-37%)
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Source: AISC Shapes Database v16.0 · Methodology