Steel Beam Sizes / CISC / MC Channels / MC310×21.3

MC310×21.3 Steel Beam Dimensions and Properties

CISC Miscellaneous channels · v12.1

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

Units

Section diagram

MC310×21.3 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 14.30 lb/ft 21.30 kg/m
Depth, d 12.01 in 305.00 mm
Flange width, bf 2.13 in 54.00 mm
tw 0.252 in 6.400 mm
tf 0.315 in 8.000 mm
Area 4.22 in² 2,720.00 mm²
Ix 76.88 in⁴ 32,000,000 mm⁴
Iy 0.99 in⁴ 413,000.00 mm⁴
Sx 12.81 in³ 210,000.00 mm³
Sy 0.57 in³ 9,280.00 mm³
rx 4.25 in 108.00 mm
ry 0.48 in 12.30 mm
J 0.12 in⁴ 51,000.00 mm⁴
Cw 33.29 in⁶ 8,940,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus MC310×21.3.

Lighter in MC310

MC310×15.8

Weight
15.8 kg/m (-26%)
Depth
305.0 mm (0.0%)
Ix
23,000,000 mm⁴ (-28%)

Heavier in MC310

MC310×46

Weight
46.0 kg/m (+117%)
Depth
305.0 mm (0.0%)
Ix
84,400,000 mm⁴ (+164%)

Closest Iₓ in MC310

MC310×52

Weight
52.0 kg/m (+145%)
Depth
305.0 mm (0.0%)
Ix
90,300,000 mm⁴ (+182%)

Similar weight in MC250

MC250×12.5

Weight
12.5 kg/m (-41%)
Depth
254.0 mm (-17%)
Ix
13,300,000 mm⁴ (-58%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Not produced in Canada. · Methodology