W18 sizes

Every W18 in the AISC Shapes Database, 16th Edition, from 35 to 311 lb per foot. Pick a size for its full detailing dimensions and section properties.

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W18 weight and dimension chart

SizeWeight (lb/ft)DepthFlangeSx (in³)
W18×353517 3/4"6"57.6
W18×404017 7/8"6"68.4
W18×464618"6"78.8
W18×505018"7 1/2"88.9
W18×555518 1/8"7 1/2"98.3
W18×606018 1/4"7 1/2"108
W18×656518 3/8"7 5/8"117
W18×717118 1/2"7 5/8"127
W18×767618 1/4"11"146
W18×868618 3/8"11 1/8"166
W18×979718 5/8"11 1/8"188
W18×10610618 3/4"11 1/4"204
W18×11911919"11 1/4"231
W18×13013019 1/4"11 1/8"256
W18×14314319 1/2"11 1/4"282
W18×15815819 3/4"11 1/4"310
W18×17517520"11 3/8"344
W18×19219220 3/8"11 1/2"380
W18×21121120 5/8"11 1/2"419
W18×23423421"11 5/8"466
W18×25825821 1/2"11 3/4"514
W18×28328321 7/8"11 7/8"565
W18×31131122 3/8"12"624

Data from the AISC Shapes Database v16.0. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.

Browse more: Wide flange beams · Steel Beam Size Chart