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All Categories > Carbon Bars, Plates, Tubing and Structural > Structural Steel > Miscellaneous Channels Structural Sizes  
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Miscellaneous Channels Structural Sizes

34 Items Available

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Structural Shapes

Listed on the following pages are shapes commonly carried in stock. The American Iron and Steel Institute has established a designation system for structural shapes, which has been adopted by steel producers. In the column headed "AISI Designation", a letter or letters precedes the size and weight per foot. For example, C3 X 4.1 is the AISI designation for a 3" x 4.1# Standard Structural Channel.

"W" shapes are doubly-symmetric wide flange shapes used as beams or columns whose inside flange surfaces are substantially parallel. A shape having essentially the same nominal weight and dimensions as a "W" shape listed in the tabulation but whose inside flange surfaces are not parallel may also be considered a "W" shape having the same nomenclature as the tabulated shape, provided its average flange thickness is essentially the same shape as the flange thickness of the "W" shape.

"S" shapes are doubly-symmetric shapes produced in accordance with dimensional standards adopted in 1896 by the Association of American Steel Manufacturers for American Standard beam shapes. The essential part of these standards is that the inside flange surfaces of American Standard beam shapes have approximately a 16 2/3% slope.

"M" shapes are doubly-symmetric shapes that cannot be classified as "W", "S", or bearing pile shapes. (Although not included in the standard nomenclature tabulation, bearing piles are doubly-symmetric wide flange shapes whose inside flange surfaces are essentially parallel and whose flange and web have essentially the same thickness.)

"C" shapes are channels produced in accordance with dimensional standards adopted in 1896 by the Association of American Steel Manufacturers for American Standard channels. The essential part of these standards is that the inside flange surfaces of American Standard channels have approximately a 16 2/3% slope.

"MC" shapes are channels that cannot be classified as "C" shapes.

Stocked in Lengths up to 60'


Item #

Estimated Weight per Foot

Estimated Weight 20-Ft. Bar

Estimated Weight 30-Ft. Bar

Estimated Weight 40-Ft. Bar

Estimated Weight 60-Ft. Bar

MC3 x 7.1 7.1 lb 142 lb 213 lb 284 lb 426
MC4 x 13.8 13.8 lb 276 lb 414 lb 552 lb 828
MC6 x 12 12.0 lb 240 lb 360 lb 480 lb 720
MC6 x 15.3 15.3 lb 306 lb 459 lb 612 lb 918
MC6 x 16.3 16.3 lb 326 lb 489 lb 652 lb 978
MC6 x 18 18.0 lb 360 lb 540 lb 720 lb 1080
MC7 x 19.1 19.1 lb 382 lb 573 lb 764 lb 1146
MC7 x 22.7 22.7 lb 454 lb 681 lb 908 lb 1362
MC8 x 8.5 8.5 lb 170 lb 255 lb 340 lb 510
MC8 x 18.7 18.7 lb 374 lb 561 lb 748 lb 1122
Showing 10 of 34  |  View All 34 Standard Items

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