MC channels are an abbreviation for miscellaneous channels, which are usually made from carbon steel. “Miscellaneous” designation indicates that these channels do not conform to the standard dimensions of other channel types, such as C or U channels.

MC Channels (AKA Junior Channels) As compared to C channels, which have tapered flanges, the MC shape (also referred to as junior channels) is different because the flanges are parallel and flat. The “MC” stands for “miscellaneous.”

Steel channel has been classified into "C" and "U" types depending on its outlook. Hence there are two standards to show the channel dimensions - UPE & UPN. UPE is for the C channel steel with parallel flanges while UPN for the U channel steel with tapered flanges.

Stainless steel channels are utilized in fabrication projects that are exposed to more corrosive conditions, such as acids, chemicals, petrochemicals, and fresh and salt water environments. Stainless hot rolled beams are also widely employed in architectural applications.