WEXCO® 777   

High tungsten-carbide content alloy with a matrix of a chromium-boron-nickel alloy.  Tungsten carbide provides the primary wear resistance with the high chromium boride content matrix alloy providing additional wear and corrosion resistance.  Macro hardness of Rockwell C62-68.  However, over 80% volume of this alloy is occupied by tungsten carbides and chromium borides, which show a micro hardness of over DPH 4000 (over Rc70).  It is the highest wear and corrosion resistant alloy available for bimetallic cylinders.  Recommended for use where extremely abrasive and moderately corrosive conditions are encountered.  Also recommended for use in custom shops where a machine is used to process several different types of materials.