*W 

(Wide Flange) and HP (H Pile) Shapes

*M 

(Miscellaneous Shapes)

*S 

(Based on AISC Standard Shapes)

*C 

American Standard Channels (Based on AISC Standard Channels)

MC 

(Miscellaneous Channels)

L 

(Angles)

*WT 

(Structural Tees cut from W Shapes)

*MT 

(Structural Tees cut from M Shapes)

*ST 

(Structural Tees cut from S Shapes)