Steel Beam Sizes / AISC / MC Channels / MC6x18

MC6x18 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

MC6x18 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 18.00 lb/ft 26.80 kg/m
Depth, d 6.00 in 152.00 mm
Flange width, bf 3.50 in 88.90 mm
tw 0.379 in 9.630 mm
tf 0.475 in 12.100 mm
Area 5.29 in² 3,410.00 mm²
Ix 29.70 in⁴ 12,400,000 mm⁴
Iy 5.88 in⁴ 2,450,000 mm⁴
Sx 9.89 in³ 162,000.00 mm³
Sy 2.47 in³ 40,500.00 mm³
Zx 11.70 in³ 192,000.00 mm³
Zy 4.68 in³ 76,700.00 mm³
rx 2.37 in 60.20 mm
ry 1.05 in 26.70 mm
J 0.38 in⁴ 158,000.00 mm⁴
Cw 34.60 in⁶ 9,290,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus MC6x18.

Lighter in MC6

MC6x16.3

Weight
16.3 lb/ft (-9.4%)
Depth
6.00 in (0.0%)
Ix
26.0 in⁴ (-12%)

Closest Iₓ in MC6

MC6x15.3

Weight
15.3 lb/ft (-15%)
Depth
6.00 in (0.0%)
Ix
25.3 in⁴ (-15%)

Similar weight in MC7

MC7x19.1

Weight
19.1 lb/ft (+6.1%)
Depth
7.00 in (+17%)
Ix
43.1 in⁴ (+45%)
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Source: AISC Shapes Database v16.0 · Methodology